Finding the Fourth Proportional to 1,978.31, 2,965.17 and 744.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.31 : 2,965.17 = 744.93 : x
2. Step 2: Convert to fraction form
   1,978.31/2,965.17 = 744.93/x
3. Step 3: Cross multiply
   1,978.31x = 2,965.17 × 744.93
4. Step 4: Simplify right side
   1,978.31x = 2,208,844.09
5. Step 5: Solve for x
   x = 2,208,844.09/1,978.31
6. Step 6: Final answer
   x = 1,116.53