Finding the Fourth Proportional to 2,605.54, 3,909.39 and 1,373.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,605.54 : 3,909.39 = 1,373.86 : x
2. Step 2: Convert to fraction form
   2,605.54/3,909.39 = 1,373.86/x
3. Step 3: Cross multiply
   2,605.54x = 3,909.39 × 1,373.86
4. Step 4: Simplify right side
   2,605.54x = 5,370,954.55
5. Step 5: Solve for x
   x = 5,370,954.55/2,605.54
6. Step 6: Final answer
   x = 2,061.36