Finding the Fourth Proportional to 2,106.25, 3,160.37 and 807.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106.25 : 3,160.37 = 807.37 : x
2. Step 2: Convert to fraction form
   2,106.25/3,160.37 = 807.37/x
3. Step 3: Cross multiply
   2,106.25x = 3,160.37 × 807.37
4. Step 4: Simplify right side
   2,106.25x = 2,551,587.93
5. Step 5: Solve for x
   x = 2,551,587.93/2,106.25
6. Step 6: Final answer
   x = 1,211.44