Finding the Fourth Proportional to 5,123.84, 7,687.04 and 1,662.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,123.84 : 7,687.04 = 1,662.72 : x
2. Step 2: Convert to fraction form
   5,123.84/7,687.04 = 1,662.72/x
3. Step 3: Cross multiply
   5,123.84x = 7,687.04 × 1,662.72
4. Step 4: Simplify right side
   5,123.84x = 12,781,395.15
5. Step 5: Solve for x
   x = 12,781,395.15/5,123.84
6. Step 6: Final answer
   x = 2,494.50