Finding the Fourth Proportional to 1,665.37, 2,298.09 and 919.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.37 : 2,298.09 = 919.33 : x
2. Step 2: Convert to fraction form
   1,665.37/2,298.09 = 919.33/x
3. Step 3: Cross multiply
   1,665.37x = 2,298.09 × 919.33
4. Step 4: Simplify right side
   1,665.37x = 2,112,713.71
5. Step 5: Solve for x
   x = 2,112,713.71/1,665.37
6. Step 6: Final answer
   x = 1,268.61