Finding the Fourth Proportional to 1,819,061.40, 2,728,601.55 and 471,129.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,819,061.40 : 2,728,601.55 = 471,129.60 : x
2. Step 2: Convert to fraction form
   1,819,061.40/2,728,601.55 = 471,129.60/x
3. Step 3: Cross multiply
   1,819,061.40x = 2,728,601.55 × 471,129.60
4. Step 4: Simplify right side
   1,819,061.40x = 1,285,524,956,810.88
5. Step 5: Solve for x
   x = 1,285,524,956,810.88/1,819,061.40
6. Step 6: Final answer
   x = 706,696.85