Finding the Fourth Proportional to 2,308,639.72, 3,185,861.70 and 1,290,052.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308,639.72 : 3,185,861.70 = 1,290,052.84 : x
2. Step 2: Convert to fraction form
   2,308,639.72/3,185,861.70 = 1,290,052.84/x
3. Step 3: Cross multiply
   2,308,639.72x = 3,185,861.70 × 1,290,052.84
4. Step 4: Simplify right side
   2,308,639.72x = 4,109,929,933,932.23
5. Step 5: Solve for x
   x = 4,109,929,933,932.23/2,308,639.72
6. Step 6: Final answer
   x = 1,780,238.77