Finding the Fourth Proportional to 1,921.56, 2,646.17 and 1,669.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,921.56 : 2,646.17 = 1,669.37 : x
2. Step 2: Convert to fraction form
   1,921.56/2,646.17 = 1,669.37/x
3. Step 3: Cross multiply
   1,921.56x = 2,646.17 × 1,669.37
4. Step 4: Simplify right side
   1,921.56x = 4,417,436.81
5. Step 5: Solve for x
   x = 4,417,436.81/1,921.56
6. Step 6: Final answer
   x = 2,298.88