Finding the Fourth Proportional to 1,457.61, 2,185.27 and 994.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,457.61 : 2,185.27 = 994.24 : x
2. Step 2: Convert to fraction form
   1,457.61/2,185.27 = 994.24/x
3. Step 3: Cross multiply
   1,457.61x = 2,185.27 × 994.24
4. Step 4: Simplify right side
   1,457.61x = 2,172,671.92
5. Step 5: Solve for x
   x = 2,172,671.92/1,457.61
6. Step 6: Final answer
   x = 1,490.58