Finding the Fourth Proportional to 2,323.90, 3,206.54 and 1,380.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,323.90 : 3,206.54 = 1,380.53 : x
2. Step 2: Convert to fraction form
   2,323.90/3,206.54 = 1,380.53/x
3. Step 3: Cross multiply
   2,323.90x = 3,206.54 × 1,380.53
4. Step 4: Simplify right side
   2,323.90x = 4,426,723.86
5. Step 5: Solve for x
   x = 4,426,723.86/2,323.90
6. Step 6: Final answer
   x = 1,904.87