Finding the Fourth Proportional to 2,158,678.02, 2,978,980.20 and 1,191,810.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,678.02 : 2,978,980.20 = 1,191,810.18 : x
2. Step 2: Convert to fraction form
   2,158,678.02/2,978,980.20 = 1,191,810.18/x
3. Step 3: Cross multiply
   2,158,678.02x = 2,978,980.20 × 1,191,810.18
4. Step 4: Simplify right side
   2,158,678.02x = 3,550,378,928,378.44
5. Step 5: Solve for x
   x = 3,550,378,928,378.44/2,158,678.02
6. Step 6: Final answer
   x = 1,644,700.55