Finding the Fourth Proportional to 1,777.71, 2,664.83 and 998.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,777.71 : 2,664.83 = 998.10 : x
2. Step 2: Convert to fraction form
   1,777.71/2,664.83 = 998.10/x
3. Step 3: Cross multiply
   1,777.71x = 2,664.83 × 998.10
4. Step 4: Simplify right side
   1,777.71x = 2,659,761.83
5. Step 5: Solve for x
   x = 2,659,761.83/1,777.71
6. Step 6: Final answer
   x = 1,496.17