Finding the Fourth Proportional to 1,120,746.50, 1,546,630.53 and 718,338.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,120,746.50 : 1,546,630.53 = 718,338.50 : x
2. Step 2: Convert to fraction form
   1,120,746.50/1,546,630.53 = 718,338.50/x
3. Step 3: Cross multiply
   1,120,746.50x = 1,546,630.53 × 718,338.50
4. Step 4: Simplify right side
   1,120,746.50x = 1,111,004,254,974.41
5. Step 5: Solve for x
   x = 1,111,004,254,974.41/1,120,746.50
6. Step 6: Final answer
   x = 991,307.36