Finding the Fourth Proportional to 1,052.40, 1,571.25 and 948.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,052.40 : 1,571.25 = 948.72 : x
2. Step 2: Convert to fraction form
   1,052.40/1,571.25 = 948.72/x
3. Step 3: Cross multiply
   1,052.40x = 1,571.25 × 948.72
4. Step 4: Simplify right side
   1,052.40x = 1,490,676.30
5. Step 5: Solve for x
   x = 1,490,676.30/1,052.40
6. Step 6: Final answer
   x = 1,416.45