Finding the Fourth Proportional to 2,158,274.22, 2,978,419.02 and 1,191,405.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,274.22 : 2,978,419.02 = 1,191,405.18 : x
2. Step 2: Convert to fraction form
   2,158,274.22/2,978,419.02 = 1,191,405.18/x
3. Step 3: Cross multiply
   2,158,274.22x = 2,978,419.02 × 1,191,405.18
4. Step 4: Simplify right side
   2,158,274.22x = 3,548,503,848,638.52
5. Step 5: Solve for x
   x = 3,548,503,848,638.52/2,158,274.22
6. Step 6: Final answer
   x = 1,644,139.48