Finding the Fourth Proportional to 1,243,443.56, 1,865,164.98 and 344,885.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243,443.56 : 1,865,164.98 = 344,885.39 : x
2. Step 2: Convert to fraction form
   1,243,443.56/1,865,164.98 = 344,885.39/x
3. Step 3: Cross multiply
   1,243,443.56x = 1,865,164.98 × 344,885.39
4. Step 4: Simplify right side
   1,243,443.56x = 643,268,159,055.08
5. Step 5: Solve for x
   x = 643,268,159,055.08/1,243,443.56
6. Step 6: Final answer
   x = 517,327.99