Finding the Fourth Proportional to 1,397.10, 1,927.67 and 837.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397.10 : 1,927.67 = 837.36 : x
2. Step 2: Convert to fraction form
   1,397.10/1,927.67 = 837.36/x
3. Step 3: Cross multiply
   1,397.10x = 1,927.67 × 837.36
4. Step 4: Simplify right side
   1,397.10x = 1,614,149.56
5. Step 5: Solve for x
   x = 1,614,149.56/1,397.10
6. Step 6: Final answer
   x = 1,155.36