Finding the Fourth Proportional to 2,123.61, 3,181.36 and 1,658.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.61 : 3,181.36 = 1,658.46 : x
2. Step 2: Convert to fraction form
   2,123.61/3,181.36 = 1,658.46/x
3. Step 3: Cross multiply
   2,123.61x = 3,181.36 × 1,658.46
4. Step 4: Simplify right side
   2,123.61x = 5,276,158.31
5. Step 5: Solve for x
   x = 5,276,158.31/2,123.61
6. Step 6: Final answer
   x = 2,484.52