Finding the Fourth Proportional to 1,206,603.89, 1,809,878.16 and 607,404.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,206,603.89 : 1,809,878.16 = 607,404.17 : x
2. Step 2: Convert to fraction form
   1,206,603.89/1,809,878.16 = 607,404.17/x
3. Step 3: Cross multiply
   1,206,603.89x = 1,809,878.16 × 607,404.17
4. Step 4: Simplify right side
   1,206,603.89x = 1,099,327,537,343.69
5. Step 5: Solve for x
   x = 1,099,327,537,343.69/1,206,603.89
6. Step 6: Final answer
   x = 911,092.32