Finding the Fourth Proportional to 2,261.50, 3,120.62 and 1,317.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,261.50 : 3,120.62 = 1,317.49 : x
2. Step 2: Convert to fraction form
   2,261.50/3,120.62 = 1,317.49/x
3. Step 3: Cross multiply
   2,261.50x = 3,120.62 × 1,317.49
4. Step 4: Simplify right side
   2,261.50x = 4,111,379.06
5. Step 5: Solve for x
   x = 4,111,379.06/2,261.50
6. Step 6: Final answer
   x = 1,817.99