Finding the Fourth Proportional to 1,528,300.61, 2,109,076.67 and 840,036.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,528,300.61 : 2,109,076.67 = 840,036.10 : x
2. Step 2: Convert to fraction form
   1,528,300.61/2,109,076.67 = 840,036.10/x
3. Step 3: Cross multiply
   1,528,300.61x = 2,109,076.67 × 840,036.10
4. Step 4: Simplify right side
   1,528,300.61x = 1,771,700,540,467.79
5. Step 5: Solve for x
   x = 1,771,700,540,467.79/1,528,300.61
6. Step 6: Final answer
   x = 1,159,261.82