Finding the Fourth Proportional to 1,579.69, 2,371.56 and 994.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,579.69 : 2,371.56 = 994.87 : x
2. Step 2: Convert to fraction form
   1,579.69/2,371.56 = 994.87/x
3. Step 3: Cross multiply
   1,579.69x = 2,371.56 × 994.87
4. Step 4: Simplify right side
   1,579.69x = 2,359,393.90
5. Step 5: Solve for x
   x = 2,359,393.90/1,579.69
6. Step 6: Final answer
   x = 1,493.58