Finding the Fourth Proportional to 1,591.38, 2,196.10 and 970.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,591.38 : 2,196.10 = 970.38 : x
2. Step 2: Convert to fraction form
   1,591.38/2,196.10 = 970.38/x
3. Step 3: Cross multiply
   1,591.38x = 2,196.10 × 970.38
4. Step 4: Simplify right side
   1,591.38x = 2,131,051.52
5. Step 5: Solve for x
   x = 2,131,051.52/1,591.38
6. Step 6: Final answer
   x = 1,339.12