Finding the Fourth Proportional to 1,869.91, 2,580.47 and 1,124.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,869.91 : 2,580.47 = 1,124.50 : x
2. Step 2: Convert to fraction form
   1,869.91/2,580.47 = 1,124.50/x
3. Step 3: Cross multiply
   1,869.91x = 2,580.47 × 1,124.50
4. Step 4: Simplify right side
   1,869.91x = 2,901,738.52
5. Step 5: Solve for x
   x = 2,901,738.52/1,869.91
6. Step 6: Final answer
   x = 1,551.81