Finding the Fourth Proportional to 3,086.89, 4,630.43 and 1,138.63

Step by Step Solution

1. Step 1: Write the proportion equation
   3,086.89 : 4,630.43 = 1,138.63 : x
2. Step 2: Convert to fraction form
   3,086.89/4,630.43 = 1,138.63/x
3. Step 3: Cross multiply
   3,086.89x = 4,630.43 × 1,138.63
4. Step 4: Simplify right side
   3,086.89x = 5,272,346.51
5. Step 5: Solve for x
   x = 5,272,346.51/3,086.89
6. Step 6: Final answer
   x = 1,707.98