Finding the Fourth Proportional to 2,158,058, 2,978,120.16 and 1,191,188.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,058 : 2,978,120.16 = 1,191,188.56 : x
2. Step 2: Convert to fraction form
   2,158,058/2,978,120.16 = 1,191,188.56/x
3. Step 3: Cross multiply
   2,158,058x = 2,978,120.16 × 1,191,188.56
4. Step 4: Simplify right side
   2,158,058x = 3,547,502,664,897.37
5. Step 5: Solve for x
   x = 3,547,502,664,897.37/2,158,058
6. Step 6: Final answer
   x = 1,643,840.28