Finding the Fourth Proportional to 1,990.10, 2,746.17 and 1,105.85

Step by Step Solution

1. Step 1: Write the proportion equation
   1,990.10 : 2,746.17 = 1,105.85 : x
2. Step 2: Convert to fraction form
   1,990.10/2,746.17 = 1,105.85/x
3. Step 3: Cross multiply
   1,990.10x = 2,746.17 × 1,105.85
4. Step 4: Simplify right side
   1,990.10x = 3,036,838.36
5. Step 5: Solve for x
   x = 3,036,838.36/1,990.10
6. Step 6: Final answer
   x = 1,525.98