Finding the Fourth Proportional to 901.98, 1,236.62 and 885.59

Step by Step Solution

1. Step 1: Write the proportion equation
   901.98 : 1,236.62 = 885.59 : x
2. Step 2: Convert to fraction form
   901.98/1,236.62 = 885.59/x
3. Step 3: Cross multiply
   901.98x = 1,236.62 × 885.59
4. Step 4: Simplify right side
   901.98x = 1,095,127.69
5. Step 5: Solve for x
   x = 1,095,127.69/901.98
6. Step 6: Final answer
   x = 1,214.14