Finding the Fourth Proportional to 2,380.37, 3,570.50 and 648.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,380.37 : 3,570.50 = 648.99 : x
2. Step 2: Convert to fraction form
   2,380.37/3,570.50 = 648.99/x
3. Step 3: Cross multiply
   2,380.37x = 3,570.50 × 648.99
4. Step 4: Simplify right side
   2,380.37x = 2,317,215.55
5. Step 5: Solve for x
   x = 2,317,215.55/2,380.37
6. Step 6: Final answer
   x = 973.47