Finding the Fourth Proportional to 1,300.80, 1,950.72 and 1,105.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.80 : 1,950.72 = 1,105.74 : x
2. Step 2: Convert to fraction form
   1,300.80/1,950.72 = 1,105.74/x
3. Step 3: Cross multiply
   1,300.80x = 1,950.72 × 1,105.74
4. Step 4: Simplify right side
   1,300.80x = 2,156,989.13
5. Step 5: Solve for x
   x = 2,156,989.13/1,300.80
6. Step 6: Final answer
   x = 1,658.20