Finding the Fourth Proportional to 687,061.29, 1,030,109.03 and 302,627.70

Step by Step Solution

1. Step 1: Write the proportion equation
   687,061.29 : 1,030,109.03 = 302,627.70 : x
2. Step 2: Convert to fraction form
   687,061.29/1,030,109.03 = 302,627.70/x
3. Step 3: Cross multiply
   687,061.29x = 1,030,109.03 × 302,627.70
4. Step 4: Simplify right side
   687,061.29x = 311,739,521,347.59
5. Step 5: Solve for x
   x = 311,739,521,347.59/687,061.29
6. Step 6: Final answer
   x = 453,728.84