Finding the Fourth Proportional to 1,917.98, 2,879.66 and 981.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,917.98 : 2,879.66 = 981.59 : x
2. Step 2: Convert to fraction form
   1,917.98/2,879.66 = 981.59/x
3. Step 3: Cross multiply
   1,917.98x = 2,879.66 × 981.59
4. Step 4: Simplify right side
   1,917.98x = 2,826,646.03
5. Step 5: Solve for x
   x = 2,826,646.03/1,917.98
6. Step 6: Final answer
   x = 1,473.76