Finding the Fourth Proportional to 1,076,581.85, 1,615,188.52 and 318,443.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,076,581.85 : 1,615,188.52 = 318,443.26 : x
2. Step 2: Convert to fraction form
   1,076,581.85/1,615,188.52 = 318,443.26/x
3. Step 3: Cross multiply
   1,076,581.85x = 1,615,188.52 × 318,443.26
4. Step 4: Simplify right side
   1,076,581.85x = 514,345,895,420.69
5. Step 5: Solve for x
   x = 514,345,895,420.69/1,076,581.85
6. Step 6: Final answer
   x = 477,758.28