Finding the Fourth Proportional to 1,962.06, 2,707.72 and 1,122.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,962.06 : 2,707.72 = 1,122.90 : x
2. Step 2: Convert to fraction form
   1,962.06/2,707.72 = 1,122.90/x
3. Step 3: Cross multiply
   1,962.06x = 2,707.72 × 1,122.90
4. Step 4: Simplify right side
   1,962.06x = 3,040,498.79
5. Step 5: Solve for x
   x = 3,040,498.79/1,962.06
6. Step 6: Final answer
   x = 1,549.65