Finding the Fourth Proportional to 2,088.03, 3,131.64 and 918.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,088.03 : 3,131.64 = 918.39 : x
2. Step 2: Convert to fraction form
   2,088.03/3,131.64 = 918.39/x
3. Step 3: Cross multiply
   2,088.03x = 3,131.64 × 918.39
4. Step 4: Simplify right side
   2,088.03x = 2,876,066.86
5. Step 5: Solve for x
   x = 2,876,066.86/2,088.03
6. Step 6: Final answer
   x = 1,377.41