Finding the Fourth Proportional to 1,131.22, 1,696.17 and 899.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.22 : 1,696.17 = 899.43 : x
2. Step 2: Convert to fraction form
   1,131.22/1,696.17 = 899.43/x
3. Step 3: Cross multiply
   1,131.22x = 1,696.17 × 899.43
4. Step 4: Simplify right side
   1,131.22x = 1,525,586.18
5. Step 5: Solve for x
   x = 1,525,586.18/1,131.22
6. Step 6: Final answer
   x = 1,348.62