Finding the Fourth Proportional to 911,767.42, 1,258,242.89 and 498,312.56

Step by Step Solution

1. Step 1: Write the proportion equation
   911,767.42 : 1,258,242.89 = 498,312.56 : x
2. Step 2: Convert to fraction form
   911,767.42/1,258,242.89 = 498,312.56/x
3. Step 3: Cross multiply
   911,767.42x = 1,258,242.89 × 498,312.56
4. Step 4: Simplify right side
   911,767.42x = 626,998,241,711.34
5. Step 5: Solve for x
   x = 626,998,241,711.34/911,767.42
6. Step 6: Final answer
   x = 687,673.44