Finding the Fourth Proportional to 2,520,758,559.12, 3,478,651,626.42 and 1,391,730,507.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,520,758,559.12 : 3,478,651,626.42 = 1,391,730,507.60 : x
2. Step 2: Convert to fraction form
   2,520,758,559.12/3,478,651,626.42 = 1,391,730,507.60/x
3. Step 3: Cross multiply
   2,520,758,559.12x = 3,478,651,626.42 × 1,391,730,507.60
4. Step 4: Simplify right side
   2,520,758,559.12x = 4,841,345,593,801,071,616
5. Step 5: Solve for x
   x = 4,841,345,593,801,071,616/2,520,758,559.12
6. Step 6: Final answer
   x = 1,920,590,758.80