Finding the Fourth Proportional to 1,429.92, 2,153.34 and 1,249.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.92 : 2,153.34 = 1,249.50 : x
2. Step 2: Convert to fraction form
   1,429.92/2,153.34 = 1,249.50/x
3. Step 3: Cross multiply
   1,429.92x = 2,153.34 × 1,249.50
4. Step 4: Simplify right side
   1,429.92x = 2,690,598.33
5. Step 5: Solve for x
   x = 2,690,598.33/1,429.92
6. Step 6: Final answer
   x = 1,881.64