Finding the Fourth Proportional to 1,724.12, 2,381.22 and 1,335.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,724.12 : 2,381.22 = 1,335.86 : x
2. Step 2: Convert to fraction form
   1,724.12/2,381.22 = 1,335.86/x
3. Step 3: Cross multiply
   1,724.12x = 2,381.22 × 1,335.86
4. Step 4: Simplify right side
   1,724.12x = 3,180,976.55
5. Step 5: Solve for x
   x = 3,180,976.55/1,724.12
6. Step 6: Final answer
   x = 1,844.99