Finding the Fourth Proportional to 675,171.98, 931,851.90 and 388,857.83

Step by Step Solution

1. Step 1: Write the proportion equation
   675,171.98 : 931,851.90 = 388,857.83 : x
2. Step 2: Convert to fraction form
   675,171.98/931,851.90 = 388,857.83/x
3. Step 3: Cross multiply
   675,171.98x = 931,851.90 × 388,857.83
4. Step 4: Simplify right side
   675,171.98x = 362,357,907,715.38
5. Step 5: Solve for x
   x = 362,357,907,715.38/675,171.98
6. Step 6: Final answer
   x = 536,689.79