Finding the Fourth Proportional to 2,645,320.72, 3,968,491.80 and 1,128,981.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,645,320.72 : 3,968,491.80 = 1,128,981.52 : x
2. Step 2: Convert to fraction form
   2,645,320.72/3,968,491.80 = 1,128,981.52/x
3. Step 3: Cross multiply
   2,645,320.72x = 3,968,491.80 × 1,128,981.52
4. Step 4: Simplify right side
   2,645,320.72x = 4,480,353,904,471.54
5. Step 5: Solve for x
   x = 4,480,353,904,471.54/2,645,320.72
6. Step 6: Final answer
   x = 1,693,690.25