Finding the Fourth Proportional to 1,591.12, 2,196.51 and 1,001.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,591.12 : 2,196.51 = 1,001.98 : x
2. Step 2: Convert to fraction form
   1,591.12/2,196.51 = 1,001.98/x
3. Step 3: Cross multiply
   1,591.12x = 2,196.51 × 1,001.98
4. Step 4: Simplify right side
   1,591.12x = 2,200,859.09
5. Step 5: Solve for x
   x = 2,200,859.09/1,591.12
6. Step 6: Final answer
   x = 1,383.21