Finding the Fourth Proportional to 791,061.48, 1,091,664.88 and 428,485.46

Step by Step Solution

1. Step 1: Write the proportion equation
   791,061.48 : 1,091,664.88 = 428,485.46 : x
2. Step 2: Convert to fraction form
   791,061.48/1,091,664.88 = 428,485.46/x
3. Step 3: Cross multiply
   791,061.48x = 1,091,664.88 × 428,485.46
4. Step 4: Simplify right side
   791,061.48x = 467,762,528,272.65
5. Step 5: Solve for x
   x = 467,762,528,272.65/791,061.48
6. Step 6: Final answer
   x = 591,309.96