Finding the Fourth Proportional to 2,215,970.10, 3,326,579.55 and 1,257,189.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215,970.10 : 3,326,579.55 = 1,257,189.30 : x
2. Step 2: Convert to fraction form
   2,215,970.10/3,326,579.55 = 1,257,189.30/x
3. Step 3: Cross multiply
   2,215,970.10x = 3,326,579.55 × 1,257,189.30
4. Step 4: Simplify right side
   2,215,970.10x = 4,182,140,215,858.82
5. Step 5: Solve for x
   x = 4,182,140,215,858.82/2,215,970.10
6. Step 6: Final answer
   x = 1,887,272.85