Finding the Fourth Proportional to 1,086.23, 1,630.43 and 599.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.23 : 1,630.43 = 599.51 : x
2. Step 2: Convert to fraction form
   1,086.23/1,630.43 = 599.51/x
3. Step 3: Cross multiply
   1,086.23x = 1,630.43 × 599.51
4. Step 4: Simplify right side
   1,086.23x = 977,447.94
5. Step 5: Solve for x
   x = 977,447.94/1,086.23
6. Step 6: Final answer
   x = 899.86