Finding the Fourth Proportional to 1,276,185.89, 1,914,315.96 and 477,315.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,276,185.89 : 1,914,315.96 = 477,315.02 : x
2. Step 2: Convert to fraction form
   1,276,185.89/1,914,315.96 = 477,315.02/x
3. Step 3: Cross multiply
   1,276,185.89x = 1,914,315.96 × 477,315.02
4. Step 4: Simplify right side
   1,276,185.89x = 913,731,760,733.72
5. Step 5: Solve for x
   x = 913,731,760,733.72/1,276,185.89
6. Step 6: Final answer
   x = 715,986.42