Finding the Fourth Proportional to 2,158,611.67, 2,978,888.53 and 1,191,743.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,611.67 : 2,978,888.53 = 1,191,743.83 : x
2. Step 2: Convert to fraction form
   2,158,611.67/2,978,888.53 = 1,191,743.83/x
3. Step 3: Cross multiply
   2,158,611.67x = 2,978,888.53 × 1,191,743.83
4. Step 4: Simplify right side
   2,158,611.67x = 3,550,072,015,458.69
5. Step 5: Solve for x
   x = 3,550,072,015,458.69/2,158,611.67
6. Step 6: Final answer
   x = 1,644,608.93