Finding the Fourth Proportional to 1,071,488.18, 1,478,649.38 and 588,061.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,071,488.18 : 1,478,649.38 = 588,061.28 : x
2. Step 2: Convert to fraction form
   1,071,488.18/1,478,649.38 = 588,061.28/x
3. Step 3: Cross multiply
   1,071,488.18x = 1,478,649.38 × 588,061.28
4. Step 4: Simplify right side
   1,071,488.18x = 869,536,447,074.01
5. Step 5: Solve for x
   x = 869,536,447,074.01/1,071,488.18
6. Step 6: Final answer
   x = 811,522.20