Finding the Fourth Proportional to 1,384,812, 1,911,106.58 and 781,200

Step by Step Solution

1. Step 1: Write the proportion equation
   1,384,812 : 1,911,106.58 = 781,200 : x
2. Step 2: Convert to fraction form
   1,384,812/1,911,106.58 = 781,200/x
3. Step 3: Cross multiply
   1,384,812x = 1,911,106.58 × 781,200
4. Step 4: Simplify right side
   1,384,812x = 1,492,956,456,390
5. Step 5: Solve for x
   x = 1,492,956,456,390/1,384,812
6. Step 6: Final answer
   x = 1,078,093.24