Finding the Fourth Proportional to 1,377.41, 1,901.27 and 788.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.41 : 1,901.27 = 788.13 : x
2. Step 2: Convert to fraction form
   1,377.41/1,901.27 = 788.13/x
3. Step 3: Cross multiply
   1,377.41x = 1,901.27 × 788.13
4. Step 4: Simplify right side
   1,377.41x = 1,498,449.90
5. Step 5: Solve for x
   x = 1,498,449.90/1,377.41
6. Step 6: Final answer
   x = 1,087.88