Finding the Fourth Proportional to 2,158,134.20, 2,978,224.74 and 1,191,264.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,134.20 : 2,978,224.74 = 1,191,264.23 : x
2. Step 2: Convert to fraction form
   2,158,134.20/2,978,224.74 = 1,191,264.23/x
3. Step 3: Cross multiply
   2,158,134.20x = 2,978,224.74 × 1,191,264.23
4. Step 4: Simplify right side
   2,158,134.20x = 3,547,852,597,940.27
5. Step 5: Solve for x
   x = 3,547,852,597,940.27/2,158,134.20
6. Step 6: Final answer
   x = 1,643,944.39