Finding the Fourth Proportional to 1,087,897.33, 1,631,845.69 and 339,943.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,087,897.33 : 1,631,845.69 = 339,943.33 : x
2. Step 2: Convert to fraction form
   1,087,897.33/1,631,845.69 = 339,943.33/x
3. Step 3: Cross multiply
   1,087,897.33x = 1,631,845.69 × 339,943.33
4. Step 4: Simplify right side
   1,087,897.33x = 554,735,061,006.88
5. Step 5: Solve for x
   x = 554,735,061,006.88/1,087,897.33
6. Step 6: Final answer
   x = 509,914.90