Finding the Fourth Proportional to 1,377.58, 1,901.24 and 788.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.58 : 1,901.24 = 788.14 : x
2. Step 2: Convert to fraction form
   1,377.58/1,901.24 = 788.14/x
3. Step 3: Cross multiply
   1,377.58x = 1,901.24 × 788.14
4. Step 4: Simplify right side
   1,377.58x = 1,498,443.29
5. Step 5: Solve for x
   x = 1,498,443.29/1,377.58
6. Step 6: Final answer
   x = 1,087.74