Finding the Fourth Proportional to 1,398.96, 2,095.98 and 667.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,398.96 : 2,095.98 = 667.56 : x
2. Step 2: Convert to fraction form
   1,398.96/2,095.98 = 667.56/x
3. Step 3: Cross multiply
   1,398.96x = 2,095.98 × 667.56
4. Step 4: Simplify right side
   1,398.96x = 1,399,192.41
5. Step 5: Solve for x
   x = 1,399,192.41/1,398.96
6. Step 6: Final answer
   x = 1,000.17