Finding the Fourth Proportional to 1,144,144.10, 1,716,216.15 and 291,214.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,144,144.10 : 1,716,216.15 = 291,214.10 : x
2. Step 2: Convert to fraction form
   1,144,144.10/1,716,216.15 = 291,214.10/x
3. Step 3: Cross multiply
   1,144,144.10x = 1,716,216.15 × 291,214.10
4. Step 4: Simplify right side
   1,144,144.10x = 499,786,341,527.72
5. Step 5: Solve for x
   x = 499,786,341,527.72/1,144,144.10
6. Step 6: Final answer
   x = 436,821.15