Finding the Fourth Proportional to 2,017.90, 3,026.01 and 785.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,017.90 : 3,026.01 = 785.02 : x
2. Step 2: Convert to fraction form
   2,017.90/3,026.01 = 785.02/x
3. Step 3: Cross multiply
   2,017.90x = 3,026.01 × 785.02
4. Step 4: Simplify right side
   2,017.90x = 2,375,478.37
5. Step 5: Solve for x
   x = 2,375,478.37/2,017.90
6. Step 6: Final answer
   x = 1,177.20