Finding the Fourth Proportional to 710,196.10, 980,065.62 and 387,906.28

Step by Step Solution

1. Step 1: Write the proportion equation
   710,196.10 : 980,065.62 = 387,906.28 : x
2. Step 2: Convert to fraction form
   710,196.10/980,065.62 = 387,906.28/x
3. Step 3: Cross multiply
   710,196.10x = 980,065.62 × 387,906.28
4. Step 4: Simplify right side
   710,196.10x = 380,173,608,810.09
5. Step 5: Solve for x
   x = 380,173,608,810.09/710,196.10
6. Step 6: Final answer
   x = 535,307.94