Finding the Fourth Proportional to 2,158,039.95, 2,978,095.40 and 1,191,170.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,039.95 : 2,978,095.40 = 1,191,170.49 : x
2. Step 2: Convert to fraction form
   2,158,039.95/2,978,095.40 = 1,191,170.49/x
3. Step 3: Cross multiply
   2,158,039.95x = 2,978,095.40 × 1,191,170.49
4. Step 4: Simplify right side
   2,158,039.95x = 3,547,419,350,928.89
5. Step 5: Solve for x
   x = 3,547,419,350,928.89/2,158,039.95
6. Step 6: Final answer
   x = 1,643,815.42