Finding the Fourth Proportional to 1,890.84, 2,609.37 and 1,105.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,890.84 : 2,609.37 = 1,105.29 : x
2. Step 2: Convert to fraction form
   1,890.84/2,609.37 = 1,105.29/x
3. Step 3: Cross multiply
   1,890.84x = 2,609.37 × 1,105.29
4. Step 4: Simplify right side
   1,890.84x = 2,884,110.57
5. Step 5: Solve for x
   x = 2,884,110.57/1,890.84
6. Step 6: Final answer
   x = 1,525.31