Finding the Fourth Proportional to 1,221,158.23, 1,685,301.59 and 677,468.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,221,158.23 : 1,685,301.59 = 677,468.81 : x
2. Step 2: Convert to fraction form
   1,221,158.23/1,685,301.59 = 677,468.81/x
3. Step 3: Cross multiply
   1,221,158.23x = 1,685,301.59 × 677,468.81
4. Step 4: Simplify right side
   1,221,158.23x = 1,141,739,268,575.33
5. Step 5: Solve for x
   x = 1,141,739,268,575.33/1,221,158.23
6. Step 6: Final answer
   x = 934,964.24