Finding the Fourth Proportional to 2,017.55, 3,026.51 and 785.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,017.55 : 3,026.51 = 785.05 : x
2. Step 2: Convert to fraction form
   2,017.55/3,026.51 = 785.05/x
3. Step 3: Cross multiply
   2,017.55x = 3,026.51 × 785.05
4. Step 4: Simplify right side
   2,017.55x = 2,375,964.48
5. Step 5: Solve for x
   x = 2,375,964.48/2,017.55
6. Step 6: Final answer
   x = 1,177.65