Finding the Fourth Proportional to 2,123.49, 2,929.88 and 1,557.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.49 : 2,929.88 = 1,557.14 : x
2. Step 2: Convert to fraction form
   2,123.49/2,929.88 = 1,557.14/x
3. Step 3: Cross multiply
   2,123.49x = 2,929.88 × 1,557.14
4. Step 4: Simplify right side
   2,123.49x = 4,562,210.91
5. Step 5: Solve for x
   x = 4,562,210.91/2,123.49
6. Step 6: Final answer
   x = 2,148.45