Finding the Fourth Proportional to 1,118,671.32, 1,677,457.74 and 478,884.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,118,671.32 : 1,677,457.74 = 478,884.72 : x
2. Step 2: Convert to fraction form
   1,118,671.32/1,677,457.74 = 478,884.72/x
3. Step 3: Cross multiply
   1,118,671.32x = 1,677,457.74 × 478,884.72
4. Step 4: Simplify right side
   1,118,671.32x = 803,308,880,131.73
5. Step 5: Solve for x
   x = 803,308,880,131.73/1,118,671.32
6. Step 6: Final answer
   x = 718,091.96