Finding the Fourth Proportional to 2,621.34, 3,617.61 and 1,442.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621.34 : 3,617.61 = 1,442.67 : x
2. Step 2: Convert to fraction form
   2,621.34/3,617.61 = 1,442.67/x
3. Step 3: Cross multiply
   2,621.34x = 3,617.61 × 1,442.67
4. Step 4: Simplify right side
   2,621.34x = 5,219,017.42
5. Step 5: Solve for x
   x = 5,219,017.42/2,621.34
6. Step 6: Final answer
   x = 1,990.97