Finding the Fourth Proportional to 900,881.12, 1,243,216.06 and 492,983.05

Step by Step Solution

1. Step 1: Write the proportion equation
   900,881.12 : 1,243,216.06 = 492,983.05 : x
2. Step 2: Convert to fraction form
   900,881.12/1,243,216.06 = 492,983.05/x
3. Step 3: Cross multiply
   900,881.12x = 1,243,216.06 × 492,983.05
4. Step 4: Simplify right side
   900,881.12x = 612,884,445,067.78
5. Step 5: Solve for x
   x = 612,884,445,067.78/900,881.12
6. Step 6: Final answer
   x = 680,316.67