Finding the Fourth Proportional to 2,379,889.89, 3,571,253.35 and 863,691.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,379,889.89 : 3,571,253.35 = 863,691.32 : x
2. Step 2: Convert to fraction form
   2,379,889.89/3,571,253.35 = 863,691.32/x
3. Step 3: Cross multiply
   2,379,889.89x = 3,571,253.35 × 863,691.32
4. Step 4: Simplify right side
   2,379,889.89x = 3,084,460,526,684.83
5. Step 5: Solve for x
   x = 3,084,460,526,684.83/2,379,889.89
6. Step 6: Final answer
   x = 1,296,051.78