Finding the Fourth Proportional to 915,282.53, 1,263,089.86 and 507,383.34

Step by Step Solution

1. Step 1: Write the proportion equation
   915,282.53 : 1,263,089.86 = 507,383.34 : x
2. Step 2: Convert to fraction form
   915,282.53/1,263,089.86 = 507,383.34/x
3. Step 3: Cross multiply
   915,282.53x = 1,263,089.86 × 507,383.34
4. Step 4: Simplify right side
   915,282.53x = 640,870,749,350.02
5. Step 5: Solve for x
   x = 640,870,749,350.02/915,282.53
6. Step 6: Final answer
   x = 700,188.99