Finding the Fourth Proportional to 1,398.53, 2,094.86 and 667.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,398.53 : 2,094.86 = 667.37 : x
2. Step 2: Convert to fraction form
   1,398.53/2,094.86 = 667.37/x
3. Step 3: Cross multiply
   1,398.53x = 2,094.86 × 667.37
4. Step 4: Simplify right side
   1,398.53x = 1,398,053.62
5. Step 5: Solve for x
   x = 1,398,053.62/1,398.53
6. Step 6: Final answer
   x = 999.66