Finding the Fourth Proportional to 1,603,805.15, 2,406,150.59 and 644,554.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,603,805.15 : 2,406,150.59 = 644,554.14 : x
2. Step 2: Convert to fraction form
   1,603,805.15/2,406,150.59 = 644,554.14/x
3. Step 3: Cross multiply
   1,603,805.15x = 2,406,150.59 × 644,554.14
4. Step 4: Simplify right side
   1,603,805.15x = 1,550,894,321,025.17
5. Step 5: Solve for x
   x = 1,550,894,321,025.17/1,603,805.15
6. Step 6: Final answer
   x = 967,009.19