Finding the Fourth Proportional to 1,945.97, 2,685.30 and 1,106.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,945.97 : 2,685.30 = 1,106.61 : x
2. Step 2: Convert to fraction form
   1,945.97/2,685.30 = 1,106.61/x
3. Step 3: Cross multiply
   1,945.97x = 2,685.30 × 1,106.61
4. Step 4: Simplify right side
   1,945.97x = 2,971,579.83
5. Step 5: Solve for x
   x = 2,971,579.83/1,945.97
6. Step 6: Final answer
   x = 1,527.05