Finding the Fourth Proportional to 1,113.63, 1,536.82 and 616.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,113.63 : 1,536.82 = 616.28 : x
2. Step 2: Convert to fraction form
   1,113.63/1,536.82 = 616.28/x
3. Step 3: Cross multiply
   1,113.63x = 1,536.82 × 616.28
4. Step 4: Simplify right side
   1,113.63x = 947,111.43
5. Step 5: Solve for x
   x = 947,111.43/1,113.63
6. Step 6: Final answer
   x = 850.47