Finding the Fourth Proportional to 2,548.06, 3,516.27 and 1,428.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,548.06 : 3,516.27 = 1,428.99 : x
2. Step 2: Convert to fraction form
   2,548.06/3,516.27 = 1,428.99/x
3. Step 3: Cross multiply
   2,548.06x = 3,516.27 × 1,428.99
4. Step 4: Simplify right side
   2,548.06x = 5,024,733.21
5. Step 5: Solve for x
   x = 5,024,733.21/2,548.06
6. Step 6: Final answer
   x = 1,971.99