Finding the Fourth Proportional to 1,591.79, 2,196.05 and 1,001.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,591.79 : 2,196.05 = 1,001.30 : x
2. Step 2: Convert to fraction form
   1,591.79/2,196.05 = 1,001.30/x
3. Step 3: Cross multiply
   1,591.79x = 2,196.05 × 1,001.30
4. Step 4: Simplify right side
   1,591.79x = 2,198,888.88
5. Step 5: Solve for x
   x = 2,198,888.88/1,591.79
6. Step 6: Final answer
   x = 1,381.40