Finding the Fourth Proportional to 1,565,698.85, 2,160,627.82 and 921,160.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,565,698.85 : 2,160,627.82 = 921,160.55 : x
2. Step 2: Convert to fraction form
   1,565,698.85/2,160,627.82 = 921,160.55/x
3. Step 3: Cross multiply
   1,565,698.85x = 2,160,627.82 × 921,160.55
4. Step 4: Simplify right side
   1,565,698.85x = 1,990,285,111,016.50
5. Step 5: Solve for x
   x = 1,990,285,111,016.50/1,565,698.85
6. Step 6: Final answer
   x = 1,271,180.03