Finding the Fourth Proportional to 1,120,784.50, 1,546,682.61 and 718,376.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,120,784.50 : 1,546,682.61 = 718,376.50 : x
2. Step 2: Convert to fraction form
   1,120,784.50/1,546,682.61 = 718,376.50/x
3. Step 3: Cross multiply
   1,120,784.50x = 1,546,682.61 × 718,376.50
4. Step 4: Simplify right side
   1,120,784.50x = 1,111,100,439,982.67
5. Step 5: Solve for x
   x = 1,111,100,439,982.67/1,120,784.50
6. Step 6: Final answer
   x = 991,359.57