Finding the Fourth Proportional to 2,158,612.42, 2,978,889.56 and 1,191,744.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,612.42 : 2,978,889.56 = 1,191,744.58 : x
2. Step 2: Convert to fraction form
   2,158,612.42/2,978,889.56 = 1,191,744.58/x
3. Step 3: Cross multiply
   2,158,612.42x = 2,978,889.56 × 1,191,744.58
4. Step 4: Simplify right side
   2,158,612.42x = 3,550,075,483,080.72
5. Step 5: Solve for x
   x = 3,550,075,483,080.72/2,158,612.42
6. Step 6: Final answer
   x = 1,644,609.96