Finding the Fourth Proportional to 1,665.07, 2,297.77 and 919.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.07 : 2,297.77 = 919.01 : x
2. Step 2: Convert to fraction form
   1,665.07/2,297.77 = 919.01/x
3. Step 3: Cross multiply
   1,665.07x = 2,297.77 × 919.01
4. Step 4: Simplify right side
   1,665.07x = 2,111,673.61
5. Step 5: Solve for x
   x = 2,111,673.61/1,665.07
6. Step 6: Final answer
   x = 1,268.22