Finding the Fourth Proportional to 1,086.69, 1,627.30 and 942.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.69 : 1,627.30 = 942.49 : x
2. Step 2: Convert to fraction form
   1,086.69/1,627.30 = 942.49/x
3. Step 3: Cross multiply
   1,086.69x = 1,627.30 × 942.49
4. Step 4: Simplify right side
   1,086.69x = 1,533,713.98
5. Step 5: Solve for x
   x = 1,533,713.98/1,086.69
6. Step 6: Final answer
   x = 1,411.36