Finding the Fourth Proportional to 2,636,815.38, 3,955,601.88 and 815,322.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636,815.38 : 3,955,601.88 = 815,322.12 : x
2. Step 2: Convert to fraction form
   2,636,815.38/3,955,601.88 = 815,322.12/x
3. Step 3: Cross multiply
   2,636,815.38x = 3,955,601.88 × 815,322.12
4. Step 4: Simplify right side
   2,636,815.38x = 3,225,089,710,677.59
5. Step 5: Solve for x
   x = 3,225,089,710,677.59/2,636,815.38
6. Step 6: Final answer
   x = 1,223,100.31