Finding the Fourth Proportional to 915,100.18, 1,262,913.82 and 507,329.91

Step by Step Solution

1. Step 1: Write the proportion equation
   915,100.18 : 1,262,913.82 = 507,329.91 : x
2. Step 2: Convert to fraction form
   915,100.18/1,262,913.82 = 507,329.91/x
3. Step 3: Cross multiply
   915,100.18x = 1,262,913.82 × 507,329.91
4. Step 4: Simplify right side
   915,100.18x = 640,713,954,638.36
5. Step 5: Solve for x
   x = 640,713,954,638.36/915,100.18
6. Step 6: Final answer
   x = 700,157.17