Finding the Fourth Proportional to 1,380,238.47, 2,070,780.25 and 706,796.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,380,238.47 : 2,070,780.25 = 706,796.60 : x
2. Step 2: Convert to fraction form
   1,380,238.47/2,070,780.25 = 706,796.60/x
3. Step 3: Cross multiply
   1,380,238.47x = 2,070,780.25 × 706,796.60
4. Step 4: Simplify right side
   1,380,238.47x = 1,463,620,440,047.15
5. Step 5: Solve for x
   x = 1,463,620,440,047.15/1,380,238.47
6. Step 6: Final answer
   x = 1,060,411.28