Finding the Fourth Proportional to 1,145,444.34, 1,580,716.92 and 636,146.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,145,444.34 : 1,580,716.92 = 636,146.72 : x
2. Step 2: Convert to fraction form
   1,145,444.34/1,580,716.92 = 636,146.72/x
3. Step 3: Cross multiply
   1,145,444.34x = 1,580,716.92 × 636,146.72
4. Step 4: Simplify right side
   1,145,444.34x = 1,005,567,883,906.50
5. Step 5: Solve for x
   x = 1,005,567,883,906.50/1,145,444.34
6. Step 6: Final answer
   x = 877,884.55