Finding the Fourth Proportional to 1,983.72, 2,974.80 and 750.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,983.72 : 2,974.80 = 750.72 : x
2. Step 2: Convert to fraction form
   1,983.72/2,974.80 = 750.72/x
3. Step 3: Cross multiply
   1,983.72x = 2,974.80 × 750.72
4. Step 4: Simplify right side
   1,983.72x = 2,233,241.86
5. Step 5: Solve for x
   x = 2,233,241.86/1,983.72
6. Step 6: Final answer
   x = 1,125.78