Finding the Fourth Proportional to 1,264,796.72, 1,897,198.32 and 516,842.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,264,796.72 : 1,897,198.32 = 516,842.72 : x
2. Step 2: Convert to fraction form
   1,264,796.72/1,897,198.32 = 516,842.72/x
3. Step 3: Cross multiply
   1,264,796.72x = 1,897,198.32 × 516,842.72
4. Step 4: Simplify right side
   1,264,796.72x = 980,553,140,088.23
5. Step 5: Solve for x
   x = 980,553,140,088.23/1,264,796.72
6. Step 6: Final answer
   x = 775,265.40