Finding the Fourth Proportional to 1,984.22, 2,978.17 and 1,011.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,984.22 : 2,978.17 = 1,011.05 : x
2. Step 2: Convert to fraction form
   1,984.22/2,978.17 = 1,011.05/x
3. Step 3: Cross multiply
   1,984.22x = 2,978.17 × 1,011.05
4. Step 4: Simplify right side
   1,984.22x = 3,011,078.78
5. Step 5: Solve for x
   x = 3,011,078.78/1,984.22
6. Step 6: Final answer
   x = 1,517.51