Finding the Fourth Proportional to 2,915.93, 4,375.71 and 1,272.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,915.93 : 4,375.71 = 1,272.50 : x
2. Step 2: Convert to fraction form
   2,915.93/4,375.71 = 1,272.50/x
3. Step 3: Cross multiply
   2,915.93x = 4,375.71 × 1,272.50
4. Step 4: Simplify right side
   2,915.93x = 5,568,090.98
5. Step 5: Solve for x
   x = 5,568,090.98/2,915.93
6. Step 6: Final answer
   x = 1,909.54