Finding the Fourth Proportional to 1,427.71, 1,969.61 and 837.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,427.71 : 1,969.61 = 837.98 : x
2. Step 2: Convert to fraction form
   1,427.71/1,969.61 = 837.98/x
3. Step 3: Cross multiply
   1,427.71x = 1,969.61 × 837.98
4. Step 4: Simplify right side
   1,427.71x = 1,650,493.79
5. Step 5: Solve for x
   x = 1,650,493.79/1,427.71
6. Step 6: Final answer
   x = 1,156.04