Finding the Fourth Proportional to 1,388,813.37, 2,083,386.51 and 490,069.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,388,813.37 : 2,083,386.51 = 490,069.50 : x
2. Step 2: Convert to fraction form
   1,388,813.37/2,083,386.51 = 490,069.50/x
3. Step 3: Cross multiply
   1,388,813.37x = 2,083,386.51 × 490,069.50
4. Step 4: Simplify right side
   1,388,813.37x = 1,021,004,185,262.45
5. Step 5: Solve for x
   x = 1,021,004,185,262.45/1,388,813.37
6. Step 6: Final answer
   x = 735,162.99