Finding the Fourth Proportional to 1,111.94, 1,534.16 and 633.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.94 : 1,534.16 = 633.30 : x
2. Step 2: Convert to fraction form
   1,111.94/1,534.16 = 633.30/x
3. Step 3: Cross multiply
   1,111.94x = 1,534.16 × 633.30
4. Step 4: Simplify right side
   1,111.94x = 971,583.53
5. Step 5: Solve for x
   x = 971,583.53/1,111.94
6. Step 6: Final answer
   x = 873.77