Finding the Fourth Proportional to 1,665.04, 2,297.70 and 918.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.04 : 2,297.70 = 918.90 : x
2. Step 2: Convert to fraction form
   1,665.04/2,297.70 = 918.90/x
3. Step 3: Cross multiply
   1,665.04x = 2,297.70 × 918.90
4. Step 4: Simplify right side
   1,665.04x = 2,111,356.53
5. Step 5: Solve for x
   x = 2,111,356.53/1,665.04
6. Step 6: Final answer
   x = 1,268.05