Finding the Fourth Proportional to 1,069,920.72, 1,607,388.72 and 1,009,394.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,069,920.72 : 1,607,388.72 = 1,009,394.16 : x
2. Step 2: Convert to fraction form
   1,069,920.72/1,607,388.72 = 1,009,394.16/x
3. Step 3: Cross multiply
   1,069,920.72x = 1,607,388.72 × 1,009,394.16
4. Step 4: Simplify right side
   1,069,920.72x = 1,622,488,786,817.88
5. Step 5: Solve for x
   x = 1,622,488,786,817.88/1,069,920.72
6. Step 6: Final answer
   x = 1,516,457.02