Finding the Fourth Proportional to 2,158,048.23, 2,978,106.74 and 1,191,178.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,048.23 : 2,978,106.74 = 1,191,178.77 : x
2. Step 2: Convert to fraction form
   2,158,048.23/2,978,106.74 = 1,191,178.77/x
3. Step 3: Cross multiply
   2,158,048.23x = 2,978,106.74 × 1,191,178.77
4. Step 4: Simplify right side
   2,158,048.23x = 3,547,457,517,526.02
5. Step 5: Solve for x
   x = 3,547,457,517,526.02/2,158,048.23
6. Step 6: Final answer
   x = 1,643,826.80