Finding the Fourth Proportional to 764,068.55, 1,054,737.86 and 515,764.67

Step by Step Solution

1. Step 1: Write the proportion equation
   764,068.55 : 1,054,737.86 = 515,764.67 : x
2. Step 2: Convert to fraction form
   764,068.55/1,054,737.86 = 515,764.67/x
3. Step 3: Cross multiply
   764,068.55x = 1,054,737.86 × 515,764.67
4. Step 4: Simplify right side
   764,068.55x = 543,996,516,446.89
5. Step 5: Solve for x
   x = 543,996,516,446.89/764,068.55
6. Step 6: Final answer
   x = 711,973.45