Finding the Fourth Proportional to 1,261,605.61, 1,892,316.91 and 492,958.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,261,605.61 : 1,892,316.91 = 492,958.83 : x
2. Step 2: Convert to fraction form
   1,261,605.61/1,892,316.91 = 492,958.83/x
3. Step 3: Cross multiply
   1,261,605.61x = 1,892,316.91 × 492,958.83
4. Step 4: Simplify right side
   1,261,605.61x = 932,834,323,917.51
5. Step 5: Solve for x
   x = 932,834,323,917.51/1,261,605.61
6. Step 6: Final answer
   x = 739,402.49