Finding the Fourth Proportional to 1,105,081.56, 1,657,823.13 and 456,659.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105,081.56 : 1,657,823.13 = 456,659.30 : x
2. Step 2: Convert to fraction form
   1,105,081.56/1,657,823.13 = 456,659.30/x
3. Step 3: Cross multiply
   1,105,081.56x = 1,657,823.13 × 456,659.30
4. Step 4: Simplify right side
   1,105,081.56x = 757,060,350,069.61
5. Step 5: Solve for x
   x = 757,060,350,069.61/1,105,081.56
6. Step 6: Final answer
   x = 685,071.92