Finding the Fourth Proportional to 1,990.20, 2,746.24 and 1,105.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,990.20 : 2,746.24 = 1,105.88 : x
2. Step 2: Convert to fraction form
   1,990.20/2,746.24 = 1,105.88/x
3. Step 3: Cross multiply
   1,990.20x = 2,746.24 × 1,105.88
4. Step 4: Simplify right side
   1,990.20x = 3,037,011.89
5. Step 5: Solve for x
   x = 3,037,011.89/1,990.20
6. Step 6: Final answer
   x = 1,525.98