Finding the Fourth Proportional to 1,116,288.22, 1,672,506.51 and 611,212.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,116,288.22 : 1,672,506.51 = 611,212.72 : x
2. Step 2: Convert to fraction form
   1,116,288.22/1,672,506.51 = 611,212.72/x
3. Step 3: Cross multiply
   1,116,288.22x = 1,672,506.51 × 611,212.72
4. Step 4: Simplify right side
   1,116,288.22x = 1,022,257,253,194.81
5. Step 5: Solve for x
   x = 1,022,257,253,194.81/1,116,288.22
6. Step 6: Final answer
   x = 915,764.62