Finding the Fourth Proportional to 2,155,608.72, 3,235,415.40 and 1,091,404.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155,608.72 : 3,235,415.40 = 1,091,404.80 : x
2. Step 2: Convert to fraction form
   2,155,608.72/3,235,415.40 = 1,091,404.80/x
3. Step 3: Cross multiply
   2,155,608.72x = 3,235,415.40 × 1,091,404.80
4. Step 4: Simplify right side
   2,155,608.72x = 3,531,147,897,553.92
5. Step 5: Solve for x
   x = 3,531,147,897,553.92/2,155,608.72
6. Step 6: Final answer
   x = 1,638,120.99