Finding the Fourth Proportional to 2,017.70, 3,025.78 and 784.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,017.70 : 3,025.78 = 784.96 : x
2. Step 2: Convert to fraction form
   2,017.70/3,025.78 = 784.96/x
3. Step 3: Cross multiply
   2,017.70x = 3,025.78 × 784.96
4. Step 4: Simplify right side
   2,017.70x = 2,375,116.27
5. Step 5: Solve for x
   x = 2,375,116.27/2,017.70
6. Step 6: Final answer
   x = 1,177.14