Finding the Fourth Proportional to 1,333.60, 1,990.52 and 1,251.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,333.60 : 1,990.52 = 1,251.52 : x
2. Step 2: Convert to fraction form
   1,333.60/1,990.52 = 1,251.52/x
3. Step 3: Cross multiply
   1,333.60x = 1,990.52 × 1,251.52
4. Step 4: Simplify right side
   1,333.60x = 2,491,175.59
5. Step 5: Solve for x
   x = 2,491,175.59/1,333.60
6. Step 6: Final answer
   x = 1,868.01