Finding the Fourth Proportional to 2,013.59, 2,778.63 and 1,174.26

Step by Step Solution

1. Step 1: Write the proportion equation
   2,013.59 : 2,778.63 = 1,174.26 : x
2. Step 2: Convert to fraction form
   2,013.59/2,778.63 = 1,174.26/x
3. Step 3: Cross multiply
   2,013.59x = 2,778.63 × 1,174.26
4. Step 4: Simplify right side
   2,013.59x = 3,262,834.06
5. Step 5: Solve for x
   x = 3,262,834.06/2,013.59
6. Step 6: Final answer
   x = 1,620.41