Finding the Fourth Proportional to 2,010.72, 3,017.16 and 1,917.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,010.72 : 3,017.16 = 1,917.84 : x
2. Step 2: Convert to fraction form
   2,010.72/3,017.16 = 1,917.84/x
3. Step 3: Cross multiply
   2,010.72x = 3,017.16 × 1,917.84
4. Step 4: Simplify right side
   2,010.72x = 5,786,430.13
5. Step 5: Solve for x
   x = 5,786,430.13/2,010.72
6. Step 6: Final answer
   x = 2,877.79