Finding the Fourth Proportional to 2,171,046.72, 3,256,531.20 and 891,376.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,171,046.72 : 3,256,531.20 = 891,376.32 : x
2. Step 2: Convert to fraction form
   2,171,046.72/3,256,531.20 = 891,376.32/x
3. Step 3: Cross multiply
   2,171,046.72x = 3,256,531.20 × 891,376.32
4. Step 4: Simplify right side
   2,171,046.72x = 2,902,794,797,021.18
5. Step 5: Solve for x
   x = 2,902,794,797,021.18/2,171,046.72
6. Step 6: Final answer
   x = 1,337,048.52