Finding the Fourth Proportional to 2,158,431.96, 2,978,617.81 and 1,191,541.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,431.96 : 2,978,617.81 = 1,191,541.49 : x
2. Step 2: Convert to fraction form
   2,158,431.96/2,978,617.81 = 1,191,541.49/x
3. Step 3: Cross multiply
   2,158,431.96x = 2,978,617.81 × 1,191,541.49
4. Step 4: Simplify right side
   2,158,431.96x = 3,549,146,698,999.95
5. Step 5: Solve for x
   x = 3,549,146,698,999.95/2,158,431.96
6. Step 6: Final answer
   x = 1,644,317.16