Finding the Fourth Proportional to 3,383.67, 5,074.83 and 917.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,383.67 : 5,074.83 = 917.82 : x
2. Step 2: Convert to fraction form
   3,383.67/5,074.83 = 917.82/x
3. Step 3: Cross multiply
   3,383.67x = 5,074.83 × 917.82
4. Step 4: Simplify right side
   3,383.67x = 4,657,780.47
5. Step 5: Solve for x
   x = 4,657,780.47/3,383.67
6. Step 6: Final answer
   x = 1,376.55