Finding the Fourth Proportional to 1,931.52, 2,665.36 and 1,145.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,931.52 : 2,665.36 = 1,145.36 : x
2. Step 2: Convert to fraction form
   1,931.52/2,665.36 = 1,145.36/x
3. Step 3: Cross multiply
   1,931.52x = 2,665.36 × 1,145.36
4. Step 4: Simplify right side
   1,931.52x = 3,052,796.73
5. Step 5: Solve for x
   x = 3,052,796.73/1,931.52
6. Step 6: Final answer
   x = 1,580.52