Finding the Fourth Proportional to 576,483.30, 862,392.15 and 506,499.30

Step by Step Solution

1. Step 1: Write the proportion equation
   576,483.30 : 862,392.15 = 506,499.30 : x
2. Step 2: Convert to fraction form
   576,483.30/862,392.15 = 506,499.30/x
3. Step 3: Cross multiply
   576,483.30x = 862,392.15 × 506,499.30
4. Step 4: Simplify right side
   576,483.30x = 436,801,020,300.50
5. Step 5: Solve for x
   x = 436,801,020,300.50/576,483.30
6. Step 6: Final answer
   x = 757,699.35