Finding the Fourth Proportional to 1,086.63, 1,630.02 and 437.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.63 : 1,630.02 = 437.37 : x
2. Step 2: Convert to fraction form
   1,086.63/1,630.02 = 437.37/x
3. Step 3: Cross multiply
   1,086.63x = 1,630.02 × 437.37
4. Step 4: Simplify right side
   1,086.63x = 712,921.85
5. Step 5: Solve for x
   x = 712,921.85/1,086.63
6. Step 6: Final answer
   x = 656.09