Finding the Fourth Proportional to 2,158,134.95, 2,978,225.78 and 1,191,264.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,134.95 : 2,978,225.78 = 1,191,264.98 : x
2. Step 2: Convert to fraction form
   2,158,134.95/2,978,225.78 = 1,191,264.98/x
3. Step 3: Cross multiply
   2,158,134.95x = 2,978,225.78 × 1,191,264.98
4. Step 4: Simplify right side
   2,158,134.95x = 3,547,856,075,736.42
5. Step 5: Solve for x
   x = 3,547,856,075,736.42/2,158,134.95
6. Step 6: Final answer
   x = 1,643,945.43