Finding the Fourth Proportional to 2,260.72, 3,388.38 and 1,090

Step by Step Solution

1. Step 1: Write the proportion equation
   2,260.72 : 3,388.38 = 1,090 : x
2. Step 2: Convert to fraction form
   2,260.72/3,388.38 = 1,090/x
3. Step 3: Cross multiply
   2,260.72x = 3,388.38 × 1,090
4. Step 4: Simplify right side
   2,260.72x = 3,693,334.20
5. Step 5: Solve for x
   x = 3,693,334.20/2,260.72
6. Step 6: Final answer
   x = 1,633.70