Finding the Fourth Proportional to 1,638,842.29, 2,261,611.83 and 913,735.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,638,842.29 : 2,261,611.83 = 913,735.15 : x
2. Step 2: Convert to fraction form
   1,638,842.29/2,261,611.83 = 913,735.15/x
3. Step 3: Cross multiply
   1,638,842.29x = 2,261,611.83 × 913,735.15
4. Step 4: Simplify right side
   1,638,842.29x = 2,066,514,222,499.30
5. Step 5: Solve for x
   x = 2,066,514,222,499.30/1,638,842.29
6. Step 6: Final answer
   x = 1,260,959.79