Finding the Fourth Proportional to 1,393.34, 2,087.04 and 1,046.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,393.34 : 2,087.04 = 1,046.15 : x
2. Step 2: Convert to fraction form
   1,393.34/2,087.04 = 1,046.15/x
3. Step 3: Cross multiply
   1,393.34x = 2,087.04 × 1,046.15
4. Step 4: Simplify right side
   1,393.34x = 2,183,346.46
5. Step 5: Solve for x
   x = 2,183,346.46/1,393.34
6. Step 6: Final answer
   x = 1,566.99