Finding the Fourth Proportional to 1,621.82, 2,237.23 and 1,411.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,621.82 : 2,237.23 = 1,411.63 : x
2. Step 2: Convert to fraction form
   1,621.82/2,237.23 = 1,411.63/x
3. Step 3: Cross multiply
   1,621.82x = 2,237.23 × 1,411.63
4. Step 4: Simplify right side
   1,621.82x = 3,158,135.39
5. Step 5: Solve for x
   x = 3,158,135.39/1,621.82
6. Step 6: Final answer
   x = 1,947.28