Finding the Fourth Proportional to 1,406.34, 1,940.13 and 927.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,406.34 : 1,940.13 = 927.72 : x
2. Step 2: Convert to fraction form
   1,406.34/1,940.13 = 927.72/x
3. Step 3: Cross multiply
   1,406.34x = 1,940.13 × 927.72
4. Step 4: Simplify right side
   1,406.34x = 1,799,897.40
5. Step 5: Solve for x
   x = 1,799,897.40/1,406.34
6. Step 6: Final answer
   x = 1,279.85