Finding the Fourth Proportional to 2,784.74, 4,177.73 and 910.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,784.74 : 4,177.73 = 910.72 : x
2. Step 2: Convert to fraction form
   2,784.74/4,177.73 = 910.72/x
3. Step 3: Cross multiply
   2,784.74x = 4,177.73 × 910.72
4. Step 4: Simplify right side
   2,784.74x = 3,804,749.76
5. Step 5: Solve for x
   x = 3,804,749.76/2,784.74
6. Step 6: Final answer
   x = 1,366.29