Finding the Fourth Proportional to 2,123.21, 3,182.90 and 754.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.21 : 3,182.90 = 754.89 : x
2. Step 2: Convert to fraction form
   2,123.21/3,182.90 = 754.89/x
3. Step 3: Cross multiply
   2,123.21x = 3,182.90 × 754.89
4. Step 4: Simplify right side
   2,123.21x = 2,402,735.61
5. Step 5: Solve for x
   x = 2,402,735.61/2,123.21
6. Step 6: Final answer
   x = 1,131.65