Finding the Fourth Proportional to 1,427,510.88, 2,140,588.56 and 828,655.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,427,510.88 : 2,140,588.56 = 828,655.68 : x
2. Step 2: Convert to fraction form
   1,427,510.88/2,140,588.56 = 828,655.68/x
3. Step 3: Cross multiply
   1,427,510.88x = 2,140,588.56 × 828,655.68
4. Step 4: Simplify right side
   1,427,510.88x = 1,773,810,868,787.02
5. Step 5: Solve for x
   x = 1,773,810,868,787.02/1,427,510.88
6. Step 6: Final answer
   x = 1,242,590.09