Finding the Fourth Proportional to 1,375,857.69, 1,898,619.72 and 764,049.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,375,857.69 : 1,898,619.72 = 764,049.21 : x
2. Step 2: Convert to fraction form
   1,375,857.69/1,898,619.72 = 764,049.21/x
3. Step 3: Cross multiply
   1,375,857.69x = 1,898,619.72 × 764,049.21
4. Step 4: Simplify right side
   1,375,857.69x = 1,450,638,897,156.42
5. Step 5: Solve for x
   x = 1,450,638,897,156.42/1,375,857.69
6. Step 6: Final answer
   x = 1,054,352.43