Finding the Fourth Proportional to 1,790.89, 2,471.42 and 994.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,790.89 : 2,471.42 = 994.25 : x
2. Step 2: Convert to fraction form
   1,790.89/2,471.42 = 994.25/x
3. Step 3: Cross multiply
   1,790.89x = 2,471.42 × 994.25
4. Step 4: Simplify right side
   1,790.89x = 2,457,218.00
5. Step 5: Solve for x
   x = 2,457,218.00/1,790.89
6. Step 6: Final answer
   x = 1,372.07