Finding the Fourth Proportional to 1,620.77, 2,233.82 and 1,408.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,620.77 : 2,233.82 = 1,408.56 : x
2. Step 2: Convert to fraction form
   1,620.77/2,233.82 = 1,408.56/x
3. Step 3: Cross multiply
   1,620.77x = 2,233.82 × 1,408.56
4. Step 4: Simplify right side
   1,620.77x = 3,146,473.59
5. Step 5: Solve for x
   x = 3,146,473.59/1,620.77
6. Step 6: Final answer
   x = 1,941.34