Finding the Fourth Proportional to 3,123.02, 4,684.58 and 814.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,123.02 : 4,684.58 = 814.52 : x
2. Step 2: Convert to fraction form
   3,123.02/4,684.58 = 814.52/x
3. Step 3: Cross multiply
   3,123.02x = 4,684.58 × 814.52
4. Step 4: Simplify right side
   3,123.02x = 3,815,656.61
5. Step 5: Solve for x
   x = 3,815,656.61/3,123.02
6. Step 6: Final answer
   x = 1,221.79