Finding the Fourth Proportional to 1,261,858, 1,891,853.88 and 763,111.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,261,858 : 1,891,853.88 = 763,111.12 : x
2. Step 2: Convert to fraction form
   1,261,858/1,891,853.88 = 763,111.12/x
3. Step 3: Cross multiply
   1,261,858x = 1,891,853.88 × 763,111.12
4. Step 4: Simplify right side
   1,261,858x = 1,443,694,733,243.15
5. Step 5: Solve for x
   x = 1,443,694,733,243.15/1,261,858
6. Step 6: Final answer
   x = 1,144,102.37