Finding the Fourth Proportional to 2,175.45, 3,002.50 and 1,291.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,175.45 : 3,002.50 = 1,291.74 : x
2. Step 2: Convert to fraction form
   2,175.45/3,002.50 = 1,291.74/x
3. Step 3: Cross multiply
   2,175.45x = 3,002.50 × 1,291.74
4. Step 4: Simplify right side
   2,175.45x = 3,878,449.35
5. Step 5: Solve for x
   x = 3,878,449.35/2,175.45
6. Step 6: Final answer
   x = 1,782.83