Finding the Fourth Proportional to 1,167.31, 1,610.38 and 835.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,167.31 : 1,610.38 = 835.62 : x
2. Step 2: Convert to fraction form
   1,167.31/1,610.38 = 835.62/x
3. Step 3: Cross multiply
   1,167.31x = 1,610.38 × 835.62
4. Step 4: Simplify right side
   1,167.31x = 1,345,655.59
5. Step 5: Solve for x
   x = 1,345,655.59/1,167.31
6. Step 6: Final answer
   x = 1,152.78