Finding the Fourth Proportional to 1,984.73, 2,978.31 and 752.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,984.73 : 2,978.31 = 752.31 : x
2. Step 2: Convert to fraction form
   1,984.73/2,978.31 = 752.31/x
3. Step 3: Cross multiply
   1,984.73x = 2,978.31 × 752.31
4. Step 4: Simplify right side
   1,984.73x = 2,240,612.40
5. Step 5: Solve for x
   x = 2,240,612.40/1,984.73
6. Step 6: Final answer
   x = 1,128.93