Finding the Fourth Proportional to 1,118.32, 1,544.61 and 970.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,118.32 : 1,544.61 = 970.90 : x
2. Step 2: Convert to fraction form
   1,118.32/1,544.61 = 970.90/x
3. Step 3: Cross multiply
   1,118.32x = 1,544.61 × 970.90
4. Step 4: Simplify right side
   1,118.32x = 1,499,661.85
5. Step 5: Solve for x
   x = 1,499,661.85/1,118.32
6. Step 6: Final answer
   x = 1,341.00