Finding the Fourth Proportional to 1,287.50, 1,931.31 and 594.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,287.50 : 1,931.31 = 594.81 : x
2. Step 2: Convert to fraction form
   1,287.50/1,931.31 = 594.81/x
3. Step 3: Cross multiply
   1,287.50x = 1,931.31 × 594.81
4. Step 4: Simplify right side
   1,287.50x = 1,148,762.50
5. Step 5: Solve for x
   x = 1,148,762.50/1,287.50
6. Step 6: Final answer
   x = 892.25