Finding the Fourth Proportional to 1,377.74, 1,902.83 and 934.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.74 : 1,902.83 = 934.88 : x
2. Step 2: Convert to fraction form
   1,377.74/1,902.83 = 934.88/x
3. Step 3: Cross multiply
   1,377.74x = 1,902.83 × 934.88
4. Step 4: Simplify right side
   1,377.74x = 1,778,903.52
5. Step 5: Solve for x
   x = 1,778,903.52/1,377.74
6. Step 6: Final answer
   x = 1,291.17