Finding the Fourth Proportional to 1,676,477.43, 2,515,140.59 and 478,404

Step by Step Solution

1. Step 1: Write the proportion equation
   1,676,477.43 : 2,515,140.59 = 478,404 : x
2. Step 2: Convert to fraction form
   1,676,477.43/2,515,140.59 = 478,404/x
3. Step 3: Cross multiply
   1,676,477.43x = 2,515,140.59 × 478,404
4. Step 4: Simplify right side
   1,676,477.43x = 1,203,253,316,426.34
5. Step 5: Solve for x
   x = 1,203,253,316,426.34/1,676,477.43
6. Step 6: Final answer
   x = 717,727.12