Finding the Fourth Proportional to 2,312,487.21, 3,191,238.42 and 1,280,066.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,312,487.21 : 3,191,238.42 = 1,280,066.19 : x
2. Step 2: Convert to fraction form
   2,312,487.21/3,191,238.42 = 1,280,066.19/x
3. Step 3: Cross multiply
   2,312,487.21x = 3,191,238.42 × 1,280,066.19
4. Step 4: Simplify right side
   2,312,487.21x = 4,084,996,383,314.50
5. Step 5: Solve for x
   x = 4,084,996,383,314.50/2,312,487.21
6. Step 6: Final answer
   x = 1,766,494.70