Finding the Fourth Proportional to 1,111.04, 1,533.16 and 613.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.04 : 1,533.16 = 613.68 : x
2. Step 2: Convert to fraction form
   1,111.04/1,533.16 = 613.68/x
3. Step 3: Cross multiply
   1,111.04x = 1,533.16 × 613.68
4. Step 4: Simplify right side
   1,111.04x = 940,870.68
5. Step 5: Solve for x
   x = 940,870.68/1,111.04
6. Step 6: Final answer
   x = 846.83