Finding the Fourth Proportional to 2,558,742.12, 3,531,081.24 and 1,397,196.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,558,742.12 : 3,531,081.24 = 1,397,196.45 : x
2. Step 2: Convert to fraction form
   2,558,742.12/3,531,081.24 = 1,397,196.45/x
3. Step 3: Cross multiply
   2,558,742.12x = 3,531,081.24 × 1,397,196.45
4. Step 4: Simplify right side
   2,558,742.12x = 4,933,614,173,189.60
5. Step 5: Solve for x
   x = 4,933,614,173,189.60/2,558,742.12
6. Step 6: Final answer
   x = 1,928,140.45