Finding the Fourth Proportional to 1,657.56, 2,287.49 and 994.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,657.56 : 2,287.49 = 994.17 : x
2. Step 2: Convert to fraction form
   1,657.56/2,287.49 = 994.17/x
3. Step 3: Cross multiply
   1,657.56x = 2,287.49 × 994.17
4. Step 4: Simplify right side
   1,657.56x = 2,274,144.98
5. Step 5: Solve for x
   x = 2,274,144.98/1,657.56
6. Step 6: Final answer
   x = 1,371.99