Finding the Fourth Proportional to 1,191,196.17, 1,643,845.32 and 647,321.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,191,196.17 : 1,643,845.32 = 647,321.67 : x
2. Step 2: Convert to fraction form
   1,191,196.17/1,643,845.32 = 647,321.67/x
3. Step 3: Cross multiply
   1,191,196.17x = 1,643,845.32 × 647,321.67
4. Step 4: Simplify right side
   1,191,196.17x = 1,064,096,697,764.08
5. Step 5: Solve for x
   x = 1,064,096,697,764.08/1,191,196.17
6. Step 6: Final answer
   x = 893,300.97