Finding the Fourth Proportional to 1,191,096.86, 1,643,722.72 and 647,235.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,191,096.86 : 1,643,722.72 = 647,235.60 : x
2. Step 2: Convert to fraction form
   1,191,096.86/1,643,722.72 = 647,235.60/x
3. Step 3: Cross multiply
   1,191,096.86x = 1,643,722.72 × 647,235.60
4. Step 4: Simplify right side
   1,191,096.86x = 1,063,875,860,912.83
5. Step 5: Solve for x
   x = 1,063,875,860,912.83/1,191,096.86
6. Step 6: Final answer
   x = 893,190.05