Finding the Fourth Proportional to 1,398.12, 2,093.94 and 1,011.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,398.12 : 2,093.94 = 1,011.48 : x
2. Step 2: Convert to fraction form
   1,398.12/2,093.94 = 1,011.48/x
3. Step 3: Cross multiply
   1,398.12x = 2,093.94 × 1,011.48
4. Step 4: Simplify right side
   1,398.12x = 2,117,978.43
5. Step 5: Solve for x
   x = 2,117,978.43/1,398.12
6. Step 6: Final answer
   x = 1,514.88