Finding the Fourth Proportional to 2,108.35, 3,160.18 and 790.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,108.35 : 3,160.18 = 790.84 : x
2. Step 2: Convert to fraction form
   2,108.35/3,160.18 = 790.84/x
3. Step 3: Cross multiply
   2,108.35x = 3,160.18 × 790.84
4. Step 4: Simplify right side
   2,108.35x = 2,499,196.75
5. Step 5: Solve for x
   x = 2,499,196.75/2,108.35
6. Step 6: Final answer
   x = 1,185.38