Finding the Fourth Proportional to 1,117,499.68, 1,673,581.38 and 643,187.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,117,499.68 : 1,673,581.38 = 643,187.98 : x
2. Step 2: Convert to fraction form
   1,117,499.68/1,673,581.38 = 643,187.98/x
3. Step 3: Cross multiply
   1,117,499.68x = 1,673,581.38 × 643,187.98
4. Step 4: Simplify right side
   1,117,499.68x = 1,076,427,427,167.81
5. Step 5: Solve for x
   x = 1,076,427,427,167.81/1,117,499.68
6. Step 6: Final answer
   x = 963,246.30