Finding the Fourth Proportional to 2,124.50, 2,931.84 and 1,296.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,124.50 : 2,931.84 = 1,296.50 : x
2. Step 2: Convert to fraction form
   2,124.50/2,931.84 = 1,296.50/x
3. Step 3: Cross multiply
   2,124.50x = 2,931.84 × 1,296.50
4. Step 4: Simplify right side
   2,124.50x = 3,801,130.56
5. Step 5: Solve for x
   x = 3,801,130.56/2,124.50
6. Step 6: Final answer
   x = 1,789.19