Finding the Fourth Proportional to 870,978.27, 1,306,480.54 and 302,377.43

Step by Step Solution

1. Step 1: Write the proportion equation
   870,978.27 : 1,306,480.54 = 302,377.43 : x
2. Step 2: Convert to fraction form
   870,978.27/1,306,480.54 = 302,377.43/x
3. Step 3: Cross multiply
   870,978.27x = 1,306,480.54 × 302,377.43
4. Step 4: Simplify right side
   870,978.27x = 395,050,220,741.87
5. Step 5: Solve for x
   x = 395,050,220,741.87/870,978.27
6. Step 6: Final answer
   x = 453,570.70