Finding the Fourth Proportional to 1,622.16, 2,431.37 and 696.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,622.16 : 2,431.37 = 696.34 : x
2. Step 2: Convert to fraction form
   1,622.16/2,431.37 = 696.34/x
3. Step 3: Cross multiply
   1,622.16x = 2,431.37 × 696.34
4. Step 4: Simplify right side
   1,622.16x = 1,693,060.19
5. Step 5: Solve for x
   x = 1,693,060.19/1,622.16
6. Step 6: Final answer
   x = 1,043.71