Finding the Fourth Proportional to 2,309,045.40, 3,186,487.35 and 1,290,450.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,309,045.40 : 3,186,487.35 = 1,290,450.15 : x
2. Step 2: Convert to fraction form
   2,309,045.40/3,186,487.35 = 1,290,450.15/x
3. Step 3: Cross multiply
   2,309,045.40x = 3,186,487.35 × 1,290,450.15
4. Step 4: Simplify right side
   2,309,045.40x = 4,112,003,078,780.60
5. Step 5: Solve for x
   x = 4,112,003,078,780.60/2,309,045.40
6. Step 6: Final answer
   x = 1,780,823.83