Finding the Fourth Proportional to 1,427.09, 1,969.52 and 837.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,427.09 : 1,969.52 = 837.61 : x
2. Step 2: Convert to fraction form
   1,427.09/1,969.52 = 837.61/x
3. Step 3: Cross multiply
   1,427.09x = 1,969.52 × 837.61
4. Step 4: Simplify right side
   1,427.09x = 1,649,691.74
5. Step 5: Solve for x
   x = 1,649,691.74/1,427.09
6. Step 6: Final answer
   x = 1,155.98