Finding the Fourth Proportional to 1,113,638.55, 1,670,665.59 and 514,203.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,113,638.55 : 1,670,665.59 = 514,203.72 : x
2. Step 2: Convert to fraction form
   1,113,638.55/1,670,665.59 = 514,203.72/x
3. Step 3: Cross multiply
   1,113,638.55x = 1,670,665.59 × 514,203.72
4. Step 4: Simplify right side
   1,113,638.55x = 859,062,461,254.00
5. Step 5: Solve for x
   x = 859,062,461,254.00/1,113,638.55
6. Step 6: Final answer
   x = 771,401.51