Finding the Fourth Proportional to 2,100.73, 3,151.01 and 540.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.73 : 3,151.01 = 540.74 : x
2. Step 2: Convert to fraction form
   2,100.73/3,151.01 = 540.74/x
3. Step 3: Cross multiply
   2,100.73x = 3,151.01 × 540.74
4. Step 4: Simplify right side
   2,100.73x = 1,703,877.15
5. Step 5: Solve for x
   x = 1,703,877.15/2,100.73
6. Step 6: Final answer
   x = 811.09