Finding the Fourth Proportional to 1,823.50, 2,517.78 and 1,426.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,823.50 : 2,517.78 = 1,426.60 : x
2. Step 2: Convert to fraction form
   1,823.50/2,517.78 = 1,426.60/x
3. Step 3: Cross multiply
   1,823.50x = 2,517.78 × 1,426.60
4. Step 4: Simplify right side
   1,823.50x = 3,591,864.95
5. Step 5: Solve for x
   x = 3,591,864.95/1,823.50
6. Step 6: Final answer
   x = 1,969.76