Finding the Fourth Proportional to 1,337.56, 2,003.37 and 1,105.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,337.56 : 2,003.37 = 1,105.90 : x
2. Step 2: Convert to fraction form
   1,337.56/2,003.37 = 1,105.90/x
3. Step 3: Cross multiply
   1,337.56x = 2,003.37 × 1,105.90
4. Step 4: Simplify right side
   1,337.56x = 2,215,526.88
5. Step 5: Solve for x
   x = 2,215,526.88/1,337.56
6. Step 6: Final answer
   x = 1,656.39