Finding the Fourth Proportional to 1,086.94, 1,630.52 and 346.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.94 : 1,630.52 = 346.61 : x
2. Step 2: Convert to fraction form
   1,086.94/1,630.52 = 346.61/x
3. Step 3: Cross multiply
   1,086.94x = 1,630.52 × 346.61
4. Step 4: Simplify right side
   1,086.94x = 565,146.82
5. Step 5: Solve for x
   x = 565,146.82/1,086.94
6. Step 6: Final answer
   x = 519.94