Finding the Fourth Proportional to 1,185,932.36, 1,636,587.72 and 642,068.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,185,932.36 : 1,636,587.72 = 642,068.54 : x
2. Step 2: Convert to fraction form
   1,185,932.36/1,636,587.72 = 642,068.54/x
3. Step 3: Cross multiply
   1,185,932.36x = 1,636,587.72 × 642,068.54
4. Step 4: Simplify right side
   1,185,932.36x = 1,050,801,487,962.33
5. Step 5: Solve for x
   x = 1,050,801,487,962.33/1,185,932.36
6. Step 6: Final answer
   x = 886,055.16