Finding the Fourth Proportional to 1,562.37, 2,155.98 and 854.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,562.37 : 2,155.98 = 854.22 : x
2. Step 2: Convert to fraction form
   1,562.37/2,155.98 = 854.22/x
3. Step 3: Cross multiply
   1,562.37x = 2,155.98 × 854.22
4. Step 4: Simplify right side
   1,562.37x = 1,841,681.24
5. Step 5: Solve for x
   x = 1,841,681.24/1,562.37
6. Step 6: Final answer
   x = 1,178.77