Finding the Fourth Proportional to 2,124.47, 2,930.61 and 1,285.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,124.47 : 2,930.61 = 1,285.44 : x
2. Step 2: Convert to fraction form
   2,124.47/2,930.61 = 1,285.44/x
3. Step 3: Cross multiply
   2,124.47x = 2,930.61 × 1,285.44
4. Step 4: Simplify right side
   2,124.47x = 3,767,123.32
5. Step 5: Solve for x
   x = 3,767,123.32/2,124.47
6. Step 6: Final answer
   x = 1,773.21