Finding the Fourth Proportional to 2,158,631.17, 2,978,915.43 and 1,191,763.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,631.17 : 2,978,915.43 = 1,191,763.33 : x
2. Step 2: Convert to fraction form
   2,158,631.17/2,978,915.43 = 1,191,763.33/x
3. Step 3: Cross multiply
   2,158,631.17x = 2,978,915.43 × 1,191,763.33
4. Step 4: Simplify right side
   2,158,631.17x = 3,550,162,169,667.01
5. Step 5: Solve for x
   x = 3,550,162,169,667.01/2,158,631.17
6. Step 6: Final answer
   x = 1,644,635.83