Finding the Fourth Proportional to 1,902.28, 2,624.33 and 1,105.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,902.28 : 2,624.33 = 1,105.55 : x
2. Step 2: Convert to fraction form
   1,902.28/2,624.33 = 1,105.55/x
3. Step 3: Cross multiply
   1,902.28x = 2,624.33 × 1,105.55
4. Step 4: Simplify right side
   1,902.28x = 2,901,314.91
5. Step 5: Solve for x
   x = 2,901,314.91/1,902.28
6. Step 6: Final answer
   x = 1,525.18