Finding the Fourth Proportional to 2,133.86, 3,199.68 and 1,440.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,133.86 : 3,199.68 = 1,440.50 : x
2. Step 2: Convert to fraction form
   2,133.86/3,199.68 = 1,440.50/x
3. Step 3: Cross multiply
   2,133.86x = 3,199.68 × 1,440.50
4. Step 4: Simplify right side
   2,133.86x = 4,609,139.04
5. Step 5: Solve for x
   x = 4,609,139.04/2,133.86
6. Step 6: Final answer
   x = 2,160.00