Finding the Fourth Proportional to 1,397.02, 1,927.81 and 837.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397.02 : 1,927.81 = 837.74 : x
2. Step 2: Convert to fraction form
   1,397.02/1,927.81 = 837.74/x
3. Step 3: Cross multiply
   1,397.02x = 1,927.81 × 837.74
4. Step 4: Simplify right side
   1,397.02x = 1,615,003.55
5. Step 5: Solve for x
   x = 1,615,003.55/1,397.02
6. Step 6: Final answer
   x = 1,156.03