Finding the Fourth Proportional to 2,103.22, 2,899.87 and 1,915.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,103.22 : 2,899.87 = 1,915.93 : x
2. Step 2: Convert to fraction form
   2,103.22/2,899.87 = 1,915.93/x
3. Step 3: Cross multiply
   2,103.22x = 2,899.87 × 1,915.93
4. Step 4: Simplify right side
   2,103.22x = 5,555,947.93
5. Step 5: Solve for x
   x = 5,555,947.93/2,103.22
6. Step 6: Final answer
   x = 2,641.64