Finding the Fourth Proportional to 2,275.54, 3,145.17 and 2,100.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,275.54 : 3,145.17 = 2,100.58 : x
2. Step 2: Convert to fraction form
   2,275.54/3,145.17 = 2,100.58/x
3. Step 3: Cross multiply
   2,275.54x = 3,145.17 × 2,100.58
4. Step 4: Simplify right side
   2,275.54x = 6,606,681.20
5. Step 5: Solve for x
   x = 6,606,681.20/2,275.54
6. Step 6: Final answer
   x = 2,903.35