Finding the Fourth Proportional to 1,334.15, 1,998.82 and 786.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,334.15 : 1,998.82 = 786.03 : x
2. Step 2: Convert to fraction form
   1,334.15/1,998.82 = 786.03/x
3. Step 3: Cross multiply
   1,334.15x = 1,998.82 × 786.03
4. Step 4: Simplify right side
   1,334.15x = 1,571,132.48
5. Step 5: Solve for x
   x = 1,571,132.48/1,334.15
6. Step 6: Final answer
   x = 1,177.63