Finding the Fourth Proportional to 1,665.44, 2,298.33 and 919.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.44 : 2,298.33 = 919.43 : x
2. Step 2: Convert to fraction form
   1,665.44/2,298.33 = 919.43/x
3. Step 3: Cross multiply
   1,665.44x = 2,298.33 × 919.43
4. Step 4: Simplify right side
   1,665.44x = 2,113,153.55
5. Step 5: Solve for x
   x = 2,113,153.55/1,665.44
6. Step 6: Final answer
   x = 1,268.83