Finding the Fourth Proportional to 1,358.33, 1,872.10 and 1,120.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,358.33 : 1,872.10 = 1,120.87 : x
2. Step 2: Convert to fraction form
   1,358.33/1,872.10 = 1,120.87/x
3. Step 3: Cross multiply
   1,358.33x = 1,872.10 × 1,120.87
4. Step 4: Simplify right side
   1,358.33x = 2,098,384.47
5. Step 5: Solve for x
   x = 2,098,384.47/1,358.33
6. Step 6: Final answer
   x = 1,544.83