Finding the Fourth Proportional to 1,591.78, 2,196.67 and 883.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,591.78 : 2,196.67 = 883.64 : x
2. Step 2: Convert to fraction form
   1,591.78/2,196.67 = 883.64/x
3. Step 3: Cross multiply
   1,591.78x = 2,196.67 × 883.64
4. Step 4: Simplify right side
   1,591.78x = 1,941,065.48
5. Step 5: Solve for x
   x = 1,941,065.48/1,591.78
6. Step 6: Final answer
   x = 1,219.43