Finding the Fourth Proportional to 1,173,340.50, 1,619,210.56 and 636,796.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,173,340.50 : 1,619,210.56 = 636,796.50 : x
2. Step 2: Convert to fraction form
   1,173,340.50/1,619,210.56 = 636,796.50/x
3. Step 3: Cross multiply
   1,173,340.50x = 1,619,210.56 × 636,796.50
4. Step 4: Simplify right side
   1,173,340.50x = 1,031,107,617,371.04
5. Step 5: Solve for x
   x = 1,031,107,617,371.04/1,173,340.50
6. Step 6: Final answer
   x = 878,779.53