Finding the Fourth Proportional to 2,086.38, 3,130.41 and 788.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.38 : 3,130.41 = 788.22 : x
2. Step 2: Convert to fraction form
   2,086.38/3,130.41 = 788.22/x
3. Step 3: Cross multiply
   2,086.38x = 3,130.41 × 788.22
4. Step 4: Simplify right side
   2,086.38x = 2,467,451.77
5. Step 5: Solve for x
   x = 2,467,451.77/2,086.38
6. Step 6: Final answer
   x = 1,182.65