Finding the Fourth Proportional to 2,158,117.71, 2,978,188.06 and 1,178,052.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,117.71 : 2,978,188.06 = 1,178,052.81 : x
2. Step 2: Convert to fraction form
   2,158,117.71/2,978,188.06 = 1,178,052.81/x
3. Step 3: Cross multiply
   2,158,117.71x = 2,978,188.06 × 1,178,052.81
4. Step 4: Simplify right side
   2,158,117.71x = 3,508,462,812,791.45
5. Step 5: Solve for x
   x = 3,508,462,812,791.45/2,158,117.71
6. Step 6: Final answer
   x = 1,625,705.03