Finding the Fourth Proportional to 1,978.22, 2,966.49 and 744.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.22 : 2,966.49 = 744.77 : x
2. Step 2: Convert to fraction form
   1,978.22/2,966.49 = 744.77/x
3. Step 3: Cross multiply
   1,978.22x = 2,966.49 × 744.77
4. Step 4: Simplify right side
   1,978.22x = 2,209,360.17
5. Step 5: Solve for x
   x = 2,209,360.17/1,978.22
6. Step 6: Final answer
   x = 1,116.84