Finding the Fourth Proportional to 2,548.10, 3,516.53 and 1,428.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,548.10 : 3,516.53 = 1,428.98 : x
2. Step 2: Convert to fraction form
   2,548.10/3,516.53 = 1,428.98/x
3. Step 3: Cross multiply
   2,548.10x = 3,516.53 × 1,428.98
4. Step 4: Simplify right side
   2,548.10x = 5,025,026.31
5. Step 5: Solve for x
   x = 5,025,026.31/2,548.10
6. Step 6: Final answer
   x = 1,972.07