Finding the Fourth Proportional to 791,111.12, 1,091,738.56 and 428,534.96

Step by Step Solution

1. Step 1: Write the proportion equation
   791,111.12 : 1,091,738.56 = 428,534.96 : x
2. Step 2: Convert to fraction form
   791,111.12/1,091,738.56 = 428,534.96/x
3. Step 3: Cross multiply
   791,111.12x = 1,091,738.56 × 428,534.96
4. Step 4: Simplify right side
   791,111.12x = 467,848,140,140.06
5. Step 5: Solve for x
   x = 467,848,140,140.06/791,111.12
6. Step 6: Final answer
   x = 591,381.07