Finding the Fourth Proportional to 1,360.98, 1,877.58 and 918.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,360.98 : 1,877.58 = 918.12 : x
2. Step 2: Convert to fraction form
   1,360.98/1,877.58 = 918.12/x
3. Step 3: Cross multiply
   1,360.98x = 1,877.58 × 918.12
4. Step 4: Simplify right side
   1,360.98x = 1,723,843.75
5. Step 5: Solve for x
   x = 1,723,843.75/1,360.98
6. Step 6: Final answer
   x = 1,266.62