Finding the Fourth Proportional to 1,433.37, 2,140.59 and 1,238.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.37 : 2,140.59 = 1,238.76 : x
2. Step 2: Convert to fraction form
   1,433.37/2,140.59 = 1,238.76/x
3. Step 3: Cross multiply
   1,433.37x = 2,140.59 × 1,238.76
4. Step 4: Simplify right side
   1,433.37x = 2,651,677.27
5. Step 5: Solve for x
   x = 2,651,677.27/1,433.37
6. Step 6: Final answer
   x = 1,849.96