Finding the Fourth Proportional to 1,189,688.16, 1,784,533.20 and 978,882.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,189,688.16 : 1,784,533.20 = 978,882.96 : x
2. Step 2: Convert to fraction form
   1,189,688.16/1,784,533.20 = 978,882.96/x
3. Step 3: Cross multiply
   1,189,688.16x = 1,784,533.20 × 978,882.96
4. Step 4: Simplify right side
   1,189,688.16x = 1,746,849,141,034.27
5. Step 5: Solve for x
   x = 1,746,849,141,034.27/1,189,688.16
6. Step 6: Final answer
   x = 1,468,325.23