Finding the Fourth Proportional to 2,548.18, 3,516.32 and 1,428.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,548.18 : 3,516.32 = 1,428.93 : x
2. Step 2: Convert to fraction form
   2,548.18/3,516.32 = 1,428.93/x
3. Step 3: Cross multiply
   2,548.18x = 3,516.32 × 1,428.93
4. Step 4: Simplify right side
   2,548.18x = 5,024,575.14
5. Step 5: Solve for x
   x = 5,024,575.14/2,548.18
6. Step 6: Final answer
   x = 1,971.83