Finding the Fourth Proportional to 2,405,561.28, 3,319,674.72 and 1,317,871.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,405,561.28 : 3,319,674.72 = 1,317,871.68 : x
2. Step 2: Convert to fraction form
   2,405,561.28/3,319,674.72 = 1,317,871.68/x
3. Step 3: Cross multiply
   2,405,561.28x = 3,319,674.72 × 1,317,871.68
4. Step 4: Simplify right side
   2,405,561.28x = 4,374,905,300,299.93
5. Step 5: Solve for x
   x = 4,374,905,300,299.93/2,405,561.28
6. Step 6: Final answer
   x = 1,818,663.00