Finding the Fourth Proportional to 1,833.20, 2,529.72 and 1,047.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,833.20 : 2,529.72 = 1,047.50 : x
2. Step 2: Convert to fraction form
   1,833.20/2,529.72 = 1,047.50/x
3. Step 3: Cross multiply
   1,833.20x = 2,529.72 × 1,047.50
4. Step 4: Simplify right side
   1,833.20x = 2,649,869.05
5. Step 5: Solve for x
   x = 2,649,869.05/1,833.20
6. Step 6: Final answer
   x = 1,445.49