Finding the Fourth Proportional to 1,288.32, 1,933.02 and 925.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,288.32 : 1,933.02 = 925.98 : x
2. Step 2: Convert to fraction form
   1,288.32/1,933.02 = 925.98/x
3. Step 3: Cross multiply
   1,288.32x = 1,933.02 × 925.98
4. Step 4: Simplify right side
   1,288.32x = 1,789,937.86
5. Step 5: Solve for x
   x = 1,789,937.86/1,288.32
6. Step 6: Final answer
   x = 1,389.36