Finding the Fourth Proportional to 2,158,637.76, 2,978,873.52 and 1,178,543.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,637.76 : 2,978,873.52 = 1,178,543.28 : x
2. Step 2: Convert to fraction form
   2,158,637.76/2,978,873.52 = 1,178,543.28/x
3. Step 3: Cross multiply
   2,158,637.76x = 2,978,873.52 × 1,178,543.28
4. Step 4: Simplify right side
   2,158,637.76x = 3,510,731,368,965.95
5. Step 5: Solve for x
   x = 3,510,731,368,965.95/2,158,637.76
6. Step 6: Final answer
   x = 1,626,364.29