Finding the Fourth Proportional to 2,158,400.59, 2,978,602.32 and 1,191,538.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,400.59 : 2,978,602.32 = 1,191,538.82 : x
2. Step 2: Convert to fraction form
   2,158,400.59/2,978,602.32 = 1,191,538.82/x
3. Step 3: Cross multiply
   2,158,400.59x = 2,978,602.32 × 1,191,538.82
4. Step 4: Simplify right side
   2,158,400.59x = 3,549,120,293,622.06
5. Step 5: Solve for x
   x = 3,549,120,293,622.06/2,158,400.59
6. Step 6: Final answer
   x = 1,644,328.82