Finding the Fourth Proportional to 1,405,061.56, 1,939,031.90 and 861,092.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,405,061.56 : 1,939,031.90 = 861,092.26 : x
2. Step 2: Convert to fraction form
   1,405,061.56/1,939,031.90 = 861,092.26/x
3. Step 3: Cross multiply
   1,405,061.56x = 1,939,031.90 × 861,092.26
4. Step 4: Simplify right side
   1,405,061.56x = 1,669,685,360,983.09
5. Step 5: Solve for x
   x = 1,669,685,360,983.09/1,405,061.56
6. Step 6: Final answer
   x = 1,188,336.09