Finding the Fourth Proportional to 1,665.16, 2,297.86 and 919.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.16 : 2,297.86 = 919.03 : x
2. Step 2: Convert to fraction form
   1,665.16/2,297.86 = 919.03/x
3. Step 3: Cross multiply
   1,665.16x = 2,297.86 × 919.03
4. Step 4: Simplify right side
   1,665.16x = 2,111,802.28
5. Step 5: Solve for x
   x = 2,111,802.28/1,665.16
6. Step 6: Final answer
   x = 1,268.23