Finding the Fourth Proportional to 2,091.30, 3,135.94 and 774.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,091.30 : 3,135.94 = 774.16 : x
2. Step 2: Convert to fraction form
   2,091.30/3,135.94 = 774.16/x
3. Step 3: Cross multiply
   2,091.30x = 3,135.94 × 774.16
4. Step 4: Simplify right side
   2,091.30x = 2,427,719.31
5. Step 5: Solve for x
   x = 2,427,719.31/2,091.30
6. Step 6: Final answer
   x = 1,160.87