Finding the Fourth Proportional to 2,588,856.56, 3,885,033.64 and 905,974.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,588,856.56 : 3,885,033.64 = 905,974.64 : x
2. Step 2: Convert to fraction form
   2,588,856.56/3,885,033.64 = 905,974.64/x
3. Step 3: Cross multiply
   2,588,856.56x = 3,885,033.64 × 905,974.64
4. Step 4: Simplify right side
   2,588,856.56x = 3,519,741,953,386.89
5. Step 5: Solve for x
   x = 3,519,741,953,386.89/2,588,856.56
6. Step 6: Final answer
   x = 1,359,573.96