Finding the Fourth Proportional to 1,591.98, 2,197.98 and 1,003.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,591.98 : 2,197.98 = 1,003.56 : x
2. Step 2: Convert to fraction form
   1,591.98/2,197.98 = 1,003.56/x
3. Step 3: Cross multiply
   1,591.98x = 2,197.98 × 1,003.56
4. Step 4: Simplify right side
   1,591.98x = 2,205,804.81
5. Step 5: Solve for x
   x = 2,205,804.81/1,591.98
6. Step 6: Final answer
   x = 1,385.57