Finding the Fourth Proportional to 1,039,279.37, 1,434,326.52 and 864,540.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,039,279.37 : 1,434,326.52 = 864,540.89 : x
2. Step 2: Convert to fraction form
   1,039,279.37/1,434,326.52 = 864,540.89/x
3. Step 3: Cross multiply
   1,039,279.37x = 1,434,326.52 × 864,540.89
4. Step 4: Simplify right side
   1,039,279.37x = 1,240,033,918,979.77
5. Step 5: Solve for x
   x = 1,240,033,918,979.77/1,039,279.37
6. Step 6: Final answer
   x = 1,193,167.07