Finding the Fourth Proportional to 1,118,680.72, 1,679,484.56 and 664,101.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,118,680.72 : 1,679,484.56 = 664,101.84 : x
2. Step 2: Convert to fraction form
   1,118,680.72/1,679,484.56 = 664,101.84/x
3. Step 3: Cross multiply
   1,118,680.72x = 1,679,484.56 × 664,101.84
4. Step 4: Simplify right side
   1,118,680.72x = 1,115,348,786,547.59
5. Step 5: Solve for x
   x = 1,115,348,786,547.59/1,118,680.72
6. Step 6: Final answer
   x = 997,021.55