Finding the Fourth Proportional to 1,591.88, 2,196.35 and 953.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,591.88 : 2,196.35 = 953.56 : x
2. Step 2: Convert to fraction form
   1,591.88/2,196.35 = 953.56/x
3. Step 3: Cross multiply
   1,591.88x = 2,196.35 × 953.56
4. Step 4: Simplify right side
   1,591.88x = 2,094,346.74
5. Step 5: Solve for x
   x = 2,094,346.74/1,591.88
6. Step 6: Final answer
   x = 1,315.64