Finding the Fourth Proportional to 2,776.98, 4,166.27 and 929.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,776.98 : 4,166.27 = 929.31 : x
2. Step 2: Convert to fraction form
   2,776.98/4,166.27 = 929.31/x
3. Step 3: Cross multiply
   2,776.98x = 4,166.27 × 929.31
4. Step 4: Simplify right side
   2,776.98x = 3,871,756.37
5. Step 5: Solve for x
   x = 3,871,756.37/2,776.98
6. Step 6: Final answer
   x = 1,394.23