Finding the Fourth Proportional to 1,064,801.07, 1,595,585.49 and 780,680.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,064,801.07 : 1,595,585.49 = 780,680.76 : x
2. Step 2: Convert to fraction form
   1,064,801.07/1,595,585.49 = 780,680.76/x
3. Step 3: Cross multiply
   1,064,801.07x = 1,595,585.49 × 780,680.76
4. Step 4: Simplify right side
   1,064,801.07x = 1,245,642,892,978.17
5. Step 5: Solve for x
   x = 1,245,642,892,978.17/1,064,801.07
6. Step 6: Final answer
   x = 1,169,836.25