Finding the Fourth Proportional to 2,621.71, 3,617.96 and 1,442.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621.71 : 3,617.96 = 1,442.77 : x
2. Step 2: Convert to fraction form
   2,621.71/3,617.96 = 1,442.77/x
3. Step 3: Cross multiply
   2,621.71x = 3,617.96 × 1,442.77
4. Step 4: Simplify right side
   2,621.71x = 5,219,881.46
5. Step 5: Solve for x
   x = 5,219,881.46/2,621.71
6. Step 6: Final answer
   x = 1,991.02