Finding the Fourth Proportional to 1,760.72, 2,429.87 and 974.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,760.72 : 2,429.87 = 974.78 : x
2. Step 2: Convert to fraction form
   1,760.72/2,429.87 = 974.78/x
3. Step 3: Cross multiply
   1,760.72x = 2,429.87 × 974.78
4. Step 4: Simplify right side
   1,760.72x = 2,368,571.66
5. Step 5: Solve for x
   x = 2,368,571.66/1,760.72
6. Step 6: Final answer
   x = 1,345.23