Finding the Fourth Proportional to 1,978,644.47, 2,968,081.52 and 558,581.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978,644.47 : 2,968,081.52 = 558,581.63 : x
2. Step 2: Convert to fraction form
   1,978,644.47/2,968,081.52 = 558,581.63/x
3. Step 3: Cross multiply
   1,978,644.47x = 2,968,081.52 × 558,581.63
4. Step 4: Simplify right side
   1,978,644.47x = 1,657,915,795,781.16
5. Step 5: Solve for x
   x = 1,657,915,795,781.16/1,978,644.47
6. Step 6: Final answer
   x = 837,904.85