Finding the Fourth Proportional to 2,175.67, 3,003.87 and 1,291.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,175.67 : 3,003.87 = 1,291.76 : x
2. Step 2: Convert to fraction form
   2,175.67/3,003.87 = 1,291.76/x
3. Step 3: Cross multiply
   2,175.67x = 3,003.87 × 1,291.76
4. Step 4: Simplify right side
   2,175.67x = 3,880,279.11
5. Step 5: Solve for x
   x = 3,880,279.11/2,175.67
6. Step 6: Final answer
   x = 1,783.49