Finding the Fourth Proportional to 2,124.42, 2,931.31 and 1,285.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,124.42 : 2,931.31 = 1,285.01 : x
2. Step 2: Convert to fraction form
   2,124.42/2,931.31 = 1,285.01/x
3. Step 3: Cross multiply
   2,124.42x = 2,931.31 × 1,285.01
4. Step 4: Simplify right side
   2,124.42x = 3,766,748.01
5. Step 5: Solve for x
   x = 3,766,748.01/2,124.42
6. Step 6: Final answer
   x = 1,773.07