Finding the Fourth Proportional to 527,923.86, 788,985.98 and 386,066.94

Step by Step Solution

1. Step 1: Write the proportion equation
   527,923.86 : 788,985.98 = 386,066.94 : x
2. Step 2: Convert to fraction form
   527,923.86/788,985.98 = 386,066.94/x
3. Step 3: Cross multiply
   527,923.86x = 788,985.98 × 386,066.94
4. Step 4: Simplify right side
   527,923.86x = 304,601,401,071.17
5. Step 5: Solve for x
   x = 304,601,401,071.17/527,923.86
6. Step 6: Final answer
   x = 576,979.80