Finding the Fourth Proportional to 1,375,869.69, 1,898,636.28 and 764,061.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,375,869.69 : 1,898,636.28 = 764,061.21 : x
2. Step 2: Convert to fraction form
   1,375,869.69/1,898,636.28 = 764,061.21/x
3. Step 3: Cross multiply
   1,375,869.69x = 1,898,636.28 × 764,061.21
4. Step 4: Simplify right side
   1,375,869.69x = 1,450,674,333,446.70
5. Step 5: Solve for x
   x = 1,450,674,333,446.70/1,375,869.69
6. Step 6: Final answer
   x = 1,054,368.99