Finding the Fourth Proportional to 677,035.83, 934,274.73 and 390,538.83

Step by Step Solution

1. Step 1: Write the proportion equation
   677,035.83 : 934,274.73 = 390,538.83 : x
2. Step 2: Convert to fraction form
   677,035.83/934,274.73 = 390,538.83/x
3. Step 3: Cross multiply
   677,035.83x = 934,274.73 × 390,538.83
4. Step 4: Simplify right side
   677,035.83x = 364,870,559,952.77
5. Step 5: Solve for x
   x = 364,870,559,952.77/677,035.83
6. Step 6: Final answer
   x = 538,923.56