Finding the Fourth Proportional to 2,380.32, 3,570.57 and 648.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,380.32 : 3,570.57 = 648.94 : x
2. Step 2: Convert to fraction form
   2,380.32/3,570.57 = 648.94/x
3. Step 3: Cross multiply
   2,380.32x = 3,570.57 × 648.94
4. Step 4: Simplify right side
   2,380.32x = 2,317,085.70
5. Step 5: Solve for x
   x = 2,317,085.70/2,380.32
6. Step 6: Final answer
   x = 973.43