Finding the Fourth Proportional to 1,902.07, 2,624.56 and 1,105.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,902.07 : 2,624.56 = 1,105.57 : x
2. Step 2: Convert to fraction form
   1,902.07/2,624.56 = 1,105.57/x
3. Step 3: Cross multiply
   1,902.07x = 2,624.56 × 1,105.57
4. Step 4: Simplify right side
   1,902.07x = 2,901,634.80
5. Step 5: Solve for x
   x = 2,901,634.80/1,902.07
6. Step 6: Final answer
   x = 1,525.51