Finding the Fourth Proportional to 1,283,476, 1,767,240.72 and 1,139,986.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,283,476 : 1,767,240.72 = 1,139,986.72 : x
2. Step 2: Convert to fraction form
   1,283,476/1,767,240.72 = 1,139,986.72/x
3. Step 3: Cross multiply
   1,283,476x = 1,767,240.72 × 1,139,986.72
4. Step 4: Simplify right side
   1,283,476x = 2,014,630,951,843.24
5. Step 5: Solve for x
   x = 2,014,630,951,843.24/1,283,476
6. Step 6: Final answer
   x = 1,569,667.80