Finding the Fourth Proportional to 1,909.10, 2,634.33 and 1,069.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,909.10 : 2,634.33 = 1,069.61 : x
2. Step 2: Convert to fraction form
   1,909.10/2,634.33 = 1,069.61/x
3. Step 3: Cross multiply
   1,909.10x = 2,634.33 × 1,069.61
4. Step 4: Simplify right side
   1,909.10x = 2,817,715.77
5. Step 5: Solve for x
   x = 2,817,715.77/1,909.10
6. Step 6: Final answer
   x = 1,475.94