Finding the Fourth Proportional to 1,377.92, 1,900.98 and 788.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.92 : 1,900.98 = 788.14 : x
2. Step 2: Convert to fraction form
   1,377.92/1,900.98 = 788.14/x
3. Step 3: Cross multiply
   1,377.92x = 1,900.98 × 788.14
4. Step 4: Simplify right side
   1,377.92x = 1,498,238.38
5. Step 5: Solve for x
   x = 1,498,238.38/1,377.92
6. Step 6: Final answer
   x = 1,087.32