Finding the Fourth Proportional to 1,333.71, 1,990.92 and 1,237.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,333.71 : 1,990.92 = 1,237.56 : x
2. Step 2: Convert to fraction form
   1,333.71/1,990.92 = 1,237.56/x
3. Step 3: Cross multiply
   1,333.71x = 1,990.92 × 1,237.56
4. Step 4: Simplify right side
   1,333.71x = 2,463,882.96
5. Step 5: Solve for x
   x = 2,463,882.96/1,333.71
6. Step 6: Final answer
   x = 1,847.39