Finding the Fourth Proportional to 2,153,830.72, 2,972,298.09 and 1,235,986.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,153,830.72 : 2,972,298.09 = 1,235,986.78 : x
2. Step 2: Convert to fraction form
   2,153,830.72/2,972,298.09 = 1,235,986.78/x
3. Step 3: Cross multiply
   2,153,830.72x = 2,972,298.09 × 1,235,986.78
4. Step 4: Simplify right side
   2,153,830.72x = 3,673,721,145,459.25
5. Step 5: Solve for x
   x = 3,673,721,145,459.25/2,153,830.72
6. Step 6: Final answer
   x = 1,705,668.47