Finding the Fourth Proportional to 2,142,771.60, 2,957,061.42 and 1,175,991.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142,771.60 : 2,957,061.42 = 1,175,991.78 : x
2. Step 2: Convert to fraction form
   2,142,771.60/2,957,061.42 = 1,175,991.78/x
3. Step 3: Cross multiply
   2,142,771.60x = 2,957,061.42 × 1,175,991.78
4. Step 4: Simplify right side
   2,142,771.60x = 3,477,479,922,875.13
5. Step 5: Solve for x
   x = 3,477,479,922,875.13/2,142,771.60
6. Step 6: Final answer
   x = 1,622,888.75