Finding the Fourth Proportional to 1,243,921.53, 1,865,016.56 and 551,112.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243,921.53 : 1,865,016.56 = 551,112.33 : x
2. Step 2: Convert to fraction form
   1,243,921.53/1,865,016.56 = 551,112.33/x
3. Step 3: Cross multiply
   1,243,921.53x = 1,865,016.56 × 551,112.33
4. Step 4: Simplify right side
   1,243,921.53x = 1,027,833,621,870.18
5. Step 5: Solve for x
   x = 1,027,833,621,870.18/1,243,921.53
6. Step 6: Final answer
   x = 826,284.94