Finding the Fourth Proportional to 1,199.31, 1,654.22 and 845.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,199.31 : 1,654.22 = 845.98 : x
2. Step 2: Convert to fraction form
   1,199.31/1,654.22 = 845.98/x
3. Step 3: Cross multiply
   1,199.31x = 1,654.22 × 845.98
4. Step 4: Simplify right side
   1,199.31x = 1,399,435.01
5. Step 5: Solve for x
   x = 1,399,435.01/1,199.31
6. Step 6: Final answer
   x = 1,166.87