Finding the Fourth Proportional to 1,435,061.55, 1,980,470.04 and 823,209.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435,061.55 : 1,980,470.04 = 823,209.81 : x
2. Step 2: Convert to fraction form
   1,435,061.55/1,980,470.04 = 823,209.81/x
3. Step 3: Cross multiply
   1,435,061.55x = 1,980,470.04 × 823,209.81
4. Step 4: Simplify right side
   1,435,061.55x = 1,630,342,365,339.09
5. Step 5: Solve for x
   x = 1,630,342,365,339.09/1,435,061.55
6. Step 6: Final answer
   x = 1,136,078.36