Finding the Fourth Proportional to 1,458.52, 2,185.86 and 841.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,458.52 : 2,185.86 = 841.90 : x
2. Step 2: Convert to fraction form
   1,458.52/2,185.86 = 841.90/x
3. Step 3: Cross multiply
   1,458.52x = 2,185.86 × 841.90
4. Step 4: Simplify right side
   1,458.52x = 1,840,275.53
5. Step 5: Solve for x
   x = 1,840,275.53/1,458.52
6. Step 6: Final answer
   x = 1,261.74