Finding the Fourth Proportional to 1,308,828.78, 1,963,186.05 and 410,250

Step by Step Solution

1. Step 1: Write the proportion equation
   1,308,828.78 : 1,963,186.05 = 410,250 : x
2. Step 2: Convert to fraction form
   1,308,828.78/1,963,186.05 = 410,250/x
3. Step 3: Cross multiply
   1,308,828.78x = 1,963,186.05 × 410,250
4. Step 4: Simplify right side
   1,308,828.78x = 805,397,077,012.50
5. Step 5: Solve for x
   x = 805,397,077,012.50/1,308,828.78
6. Step 6: Final answer
   x = 615,357.10