Finding the Fourth Proportional to 1,189,487.34, 1,784,222.73 and 290,942.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,189,487.34 : 1,784,222.73 = 290,942.01 : x
2. Step 2: Convert to fraction form
   1,189,487.34/1,784,222.73 = 290,942.01/x
3. Step 3: Cross multiply
   1,189,487.34x = 1,784,222.73 × 290,942.01
4. Step 4: Simplify right side
   1,189,487.34x = 519,105,347,353.89
5. Step 5: Solve for x
   x = 519,105,347,353.89/1,189,487.34
6. Step 6: Final answer
   x = 436,410.99