Finding the Fourth Proportional to 2,418,060.60, 3,626,216.10 and 978,139.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,418,060.60 : 3,626,216.10 = 978,139.80 : x
2. Step 2: Convert to fraction form
   2,418,060.60/3,626,216.10 = 978,139.80/x
3. Step 3: Cross multiply
   2,418,060.60x = 3,626,216.10 × 978,139.80
4. Step 4: Simplify right side
   2,418,060.60x = 3,546,946,290,810.78
5. Step 5: Solve for x
   x = 3,546,946,290,810.78/2,418,060.60
6. Step 6: Final answer
   x = 1,466,855.83