Finding the Fourth Proportional to 1,917.83, 2,646.72 and 1,067.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,917.83 : 2,646.72 = 1,067.13 : x
2. Step 2: Convert to fraction form
   1,917.83/2,646.72 = 1,067.13/x
3. Step 3: Cross multiply
   1,917.83x = 2,646.72 × 1,067.13
4. Step 4: Simplify right side
   1,917.83x = 2,824,394.31
5. Step 5: Solve for x
   x = 2,824,394.31/1,917.83
6. Step 6: Final answer
   x = 1,472.71