Finding the Fourth Proportional to 1,382,881.50, 2,074,672.18 and 385,609.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,382,881.50 : 2,074,672.18 = 385,609.50 : x
2. Step 2: Convert to fraction form
   1,382,881.50/2,074,672.18 = 385,609.50/x
3. Step 3: Cross multiply
   1,382,881.50x = 2,074,672.18 × 385,609.50
4. Step 4: Simplify right side
   1,382,881.50x = 800,013,301,993.71
5. Step 5: Solve for x
   x = 800,013,301,993.71/1,382,881.50
6. Step 6: Final answer
   x = 578,511.83