Finding the Fourth Proportional to 1,216.04, 1,822.38 and 556.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,216.04 : 1,822.38 = 556.31 : x
2. Step 2: Convert to fraction form
   1,216.04/1,822.38 = 556.31/x
3. Step 3: Cross multiply
   1,216.04x = 1,822.38 × 556.31
4. Step 4: Simplify right side
   1,216.04x = 1,013,808.22
5. Step 5: Solve for x
   x = 1,013,808.22/1,216.04
6. Step 6: Final answer
   x = 833.70