Finding the Fourth Proportional to 2,651.13, 3,978.06 and 1,092.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,651.13 : 3,978.06 = 1,092.29 : x
2. Step 2: Convert to fraction form
   2,651.13/3,978.06 = 1,092.29/x
3. Step 3: Cross multiply
   2,651.13x = 3,978.06 × 1,092.29
4. Step 4: Simplify right side
   2,651.13x = 4,345,177.32
5. Step 5: Solve for x
   x = 4,345,177.32/2,651.13
6. Step 6: Final answer
   x = 1,638.99