Finding the Fourth Proportional to 1,528,467.57, 2,109,321.41 and 840,134.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,528,467.57 : 2,109,321.41 = 840,134.23 : x
2. Step 2: Convert to fraction form
   1,528,467.57/2,109,321.41 = 840,134.23/x
3. Step 3: Cross multiply
   1,528,467.57x = 2,109,321.41 × 840,134.23
4. Step 4: Simplify right side
   1,528,467.57x = 1,772,113,109,138.89
5. Step 5: Solve for x
   x = 1,772,113,109,138.89/1,528,467.57
6. Step 6: Final answer
   x = 1,159,405.11