Finding the Fourth Proportional to 1,760.78, 2,429.88 and 994.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,760.78 : 2,429.88 = 994.24 : x
2. Step 2: Convert to fraction form
   1,760.78/2,429.88 = 994.24/x
3. Step 3: Cross multiply
   1,760.78x = 2,429.88 × 994.24
4. Step 4: Simplify right side
   1,760.78x = 2,415,889.97
5. Step 5: Solve for x
   x = 2,415,889.97/1,760.78
6. Step 6: Final answer
   x = 1,372.06