Finding the Fourth Proportional to 2,100.63, 3,150.72 and 540.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.63 : 3,150.72 = 540.58 : x
2. Step 2: Convert to fraction form
   2,100.63/3,150.72 = 540.58/x
3. Step 3: Cross multiply
   2,100.63x = 3,150.72 × 540.58
4. Step 4: Simplify right side
   2,100.63x = 1,703,216.22
5. Step 5: Solve for x
   x = 1,703,216.22/2,100.63
6. Step 6: Final answer
   x = 810.81