Finding the Fourth Proportional to 919,964.59, 1,269,551.18 and 512,057.69

Step by Step Solution

1. Step 1: Write the proportion equation
   919,964.59 : 1,269,551.18 = 512,057.69 : x
2. Step 2: Convert to fraction form
   919,964.59/1,269,551.18 = 512,057.69/x
3. Step 3: Cross multiply
   919,964.59x = 1,269,551.18 × 512,057.69
4. Step 4: Simplify right side
   919,964.59x = 650,083,439,499.96
5. Step 5: Solve for x
   x = 650,083,439,499.96/919,964.59
6. Step 6: Final answer
   x = 706,639.63