Finding the Fourth Proportional to 2,998.77, 4,498.02 and 918.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,998.77 : 4,498.02 = 918.69 : x
2. Step 2: Convert to fraction form
   2,998.77/4,498.02 = 918.69/x
3. Step 3: Cross multiply
   2,998.77x = 4,498.02 × 918.69
4. Step 4: Simplify right side
   2,998.77x = 4,132,285.99
5. Step 5: Solve for x
   x = 4,132,285.99/2,998.77
6. Step 6: Final answer
   x = 1,377.99