Finding the Fourth Proportional to 791,289.48, 1,091,978.01 and 428,722.54

Step by Step Solution

1. Step 1: Write the proportion equation
   791,289.48 : 1,091,978.01 = 428,722.54 : x
2. Step 2: Convert to fraction form
   791,289.48/1,091,978.01 = 428,722.54/x
3. Step 3: Cross multiply
   791,289.48x = 1,091,978.01 × 428,722.54
4. Step 4: Simplify right side
   791,289.48x = 468,155,586,071.35
5. Step 5: Solve for x
   x = 468,155,586,071.35/791,289.48
6. Step 6: Final answer
   x = 591,636.31