Finding the Fourth Proportional to 790,988.56, 1,091,558.72 and 428,404.16

Step by Step Solution

1. Step 1: Write the proportion equation
   790,988.56 : 1,091,558.72 = 428,404.16 : x
2. Step 2: Convert to fraction form
   790,988.56/1,091,558.72 = 428,404.16/x
3. Step 3: Cross multiply
   790,988.56x = 1,091,558.72 × 428,404.16
4. Step 4: Simplify right side
   790,988.56x = 467,628,296,532.28
5. Step 5: Solve for x
   x = 467,628,296,532.28/790,988.56
6. Step 6: Final answer
   x = 591,194.77