Finding the Fourth Proportional to 1,377.43, 1,900.92 and 788.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.43 : 1,900.92 = 788.08 : x
2. Step 2: Convert to fraction form
   1,377.43/1,900.92 = 788.08/x
3. Step 3: Cross multiply
   1,377.43x = 1,900.92 × 788.08
4. Step 4: Simplify right side
   1,377.43x = 1,498,077.03
5. Step 5: Solve for x
   x = 1,498,077.03/1,377.43
6. Step 6: Final answer
   x = 1,087.59