Finding the Fourth Proportional to 1,655.28, 2,478.06 and 1,105.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,655.28 : 2,478.06 = 1,105.56 : x
2. Step 2: Convert to fraction form
   1,655.28/2,478.06 = 1,105.56/x
3. Step 3: Cross multiply
   1,655.28x = 2,478.06 × 1,105.56
4. Step 4: Simplify right side
   1,655.28x = 2,739,644.01
5. Step 5: Solve for x
   x = 2,739,644.01/1,655.28
6. Step 6: Final answer
   x = 1,655.09