Finding the Fourth Proportional to 2,427.60, 3,350.64 and 1,542.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,427.60 : 3,350.64 = 1,542.72 : x
2. Step 2: Convert to fraction form
   2,427.60/3,350.64 = 1,542.72/x
3. Step 3: Cross multiply
   2,427.60x = 3,350.64 × 1,542.72
4. Step 4: Simplify right side
   2,427.60x = 5,169,099.34
5. Step 5: Solve for x
   x = 5,169,099.34/2,427.60
6. Step 6: Final answer
   x = 2,129.30