Finding the Fourth Proportional to 898,978.71, 1,348,519.90 and 338,018.07

Step by Step Solution

1. Step 1: Write the proportion equation
   898,978.71 : 1,348,519.90 = 338,018.07 : x
2. Step 2: Convert to fraction form
   898,978.71/1,348,519.90 = 338,018.07/x
3. Step 3: Cross multiply
   898,978.71x = 1,348,519.90 × 338,018.07
4. Step 4: Simplify right side
   898,978.71x = 455,824,093,954.59
5. Step 5: Solve for x
   x = 455,824,093,954.59/898,978.71
6. Step 6: Final answer
   x = 507,046.60