Finding the Fourth Proportional to 2,158,081.36, 2,978,152.62 and 1,191,212.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,081.36 : 2,978,152.62 = 1,191,212.08 : x
2. Step 2: Convert to fraction form
   2,158,081.36/2,978,152.62 = 1,191,212.08/x
3. Step 3: Cross multiply
   2,158,081.36x = 2,978,152.62 × 1,191,212.08
4. Step 4: Simplify right side
   2,158,081.36x = 3,547,611,377,027.65
5. Step 5: Solve for x
   x = 3,547,611,377,027.65/2,158,081.36
6. Step 6: Final answer
   x = 1,643,872.86