Finding the Fourth Proportional to 1,931.91, 2,665.49 and 1,134.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,931.91 : 2,665.49 = 1,134.78 : x
2. Step 2: Convert to fraction form
   1,931.91/2,665.49 = 1,134.78/x
3. Step 3: Cross multiply
   1,931.91x = 2,665.49 × 1,134.78
4. Step 4: Simplify right side
   1,931.91x = 3,024,739.07
5. Step 5: Solve for x
   x = 3,024,739.07/1,931.91
6. Step 6: Final answer
   x = 1,565.67