Finding the Fourth Proportional to 898,377.89, 1,239,742.50 and 490,460.00

Step by Step Solution

1. Step 1: Write the proportion equation
   898,377.89 : 1,239,742.50 = 490,460.00 : x
2. Step 2: Convert to fraction form
   898,377.89/1,239,742.50 = 490,460.00/x
3. Step 3: Cross multiply
   898,377.89x = 1,239,742.50 × 490,460.00
4. Step 4: Simplify right side
   898,377.89x = 608,044,098,512.06
5. Step 5: Solve for x
   x = 608,044,098,512.06/898,377.89
6. Step 6: Final answer
   x = 676,824.43