Finding the Fourth Proportional to 1,902.09, 2,624.50 and 1,105.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,902.09 : 2,624.50 = 1,105.40 : x
2. Step 2: Convert to fraction form
   1,902.09/2,624.50 = 1,105.40/x
3. Step 3: Cross multiply
   1,902.09x = 2,624.50 × 1,105.40
4. Step 4: Simplify right side
   1,902.09x = 2,901,122.30
5. Step 5: Solve for x
   x = 2,901,122.30/1,902.09
6. Step 6: Final answer
   x = 1,525.23