Finding the Fourth Proportional to 1,909.50, 2,635.48 and 1,123.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,909.50 : 2,635.48 = 1,123.98 : x
2. Step 2: Convert to fraction form
   1,909.50/2,635.48 = 1,123.98/x
3. Step 3: Cross multiply
   1,909.50x = 2,635.48 × 1,123.98
4. Step 4: Simplify right side
   1,909.50x = 2,962,226.81
5. Step 5: Solve for x
   x = 2,962,226.81/1,909.50
6. Step 6: Final answer
   x = 1,551.31