Finding the Fourth Proportional to 1,654.47, 2,478.15 and 1,557.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,654.47 : 2,478.15 = 1,557.54 : x
2. Step 2: Convert to fraction form
   1,654.47/2,478.15 = 1,557.54/x
3. Step 3: Cross multiply
   1,654.47x = 2,478.15 × 1,557.54
4. Step 4: Simplify right side
   1,654.47x = 3,859,817.75
5. Step 5: Solve for x
   x = 3,859,817.75/1,654.47
6. Step 6: Final answer
   x = 2,332.96